| Name | Gender | Categories | |
|---|
| Mstislav I the Great | m | Russian Grand Dukes and Tsars |  |
| Mstislav II | m | Russian Grand Dukes and Tsars | |
| Muawiyah I | m | Islamic Caliphs | |
| Muawiyah II ibn Yazid | m | Islamic Caliphs | |
| Mubarak Shah | m | Indian Sultans and Emperors | |
| Muddy Waters | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Mufasa | m | Fictional Characters from Movies | |
| Mug Corb | m | Characters in Celtic Mythology, Irish Kings | |
| Abu l-Walid Muhammad ibn Ahmad ibn Rushd | m | Notable Philosophers and Thinkers | |
| Muhammad | m | Notable Military Figures, Notable Philosophers and Thinkers | |
| Muhammad Adil Shah | m | Indian Sultans and Emperors | |
| Muhammad al-Amin | m | Islamic Caliphs | |
| Muhammad al-Mahdi | m | Islamic Caliphs | |
| Muhammad al-Qahir | m | Islamic Caliphs | |
| Muhammad ar-Radi | m | Islamic Caliphs | |
| Muhammad Azam Shah | m | Indian Sultans and Emperors | |
| Muhammad bin Tughluq | m | Indian Sultans and Emperors | |
| Muhammad Shah | m | Indian Sultans and Emperors | |
| Muhammad Shah | m | Indian Sultans and Emperors | |
| Abu Rayhan Muhammad al-Biruni | m | Notable Scientists and Inventors | |
| Abu Nasr Muhammad al-Farabi | m | Notable Philosophers and Thinkers | |
| Abu Hamid Muhammad ibn Muhammad al-Ghazali | m | Notable Philosophers and Thinkers | |
| Muhammad Ali | m | Notable Athletes | |
| Muhammad al-Idrisi | m | Notable Philosophers and Thinkers | |
| Muhammad ibn Musa al-Khwarizmi | m | Notable Philosophers and Thinkers | |
| Abu Bakr Muhammad al-Razi | m | Notable Philosophers and Thinkers, Notable Scientists and Inventors | |
| Abu Abdullah Muhammad ibn Battuta | m | Notable Explorers and Adventurers | |
| Muhammad Yunus | m | Nobel Prize Winners, Notable Businesspeople | |
| Muimne | m | Characters in Celtic Mythology, Irish Kings | |
| Muinemón | m | Characters in Celtic Mythology, Irish Kings | |
| Muirchertach mac Muiredaig | m | Irish Kings | |
| Muirchertach Mór ua Briain | m | Irish Kings | |
| Muiredach Bolgrach | m | Characters in Celtic Mythology, Irish Kings | |
| Muiredach mac Ainbcellach | m | Scottish Kings and Queens | |
| Muiredach Tírech | m | Irish Kings | |
| Muiz ud-Din Bahram | m | Indian Sultans and Emperors | |
| Muiz ud-Din Qaiqabad | m | Indian Sultans and Emperors | |
| Mundungus Fletcher | m | Harry Potter Characters | |
| Mungo Park | m | Notable Explorers and Adventurers | |
| Munroe Bourne | m | Olympic Medalists | |
| Munyoro Nyamau | m | Olympic Medalists | |
| Muppim | m | Biblical Characters | |
| Murad I | m | Ottoman Sultans | |
| Murad II | m | Ottoman Sultans | |
| Murad III | m | Islamic Caliphs, Ottoman Sultans | |
| Murad IV | m | Islamic Caliphs, Ottoman Sultans | |
| Murad V | m | Islamic Caliphs, Ottoman Sultans | |
| Murasaki Shikibu | f | Notable Writers | |
| Muriel Grossfeld | f | Notable Athletes | |
| Muriel Heslop | f | Fictional Characters from Movies | |
| Murman Omanidze | m | Georgian Presidents and Prime Ministers | |
| Murray Gell-Mann | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Murray Halberg | m | Olympic Medalists | |
| Murray Rose | m | Olympic Medalists | |
| Musa al-Hadi | m | Islamic Caliphs | |
| Miyamoto Musashi | m | Notable Military Figures | |
| Mushi | m | Biblical Characters | |
| Musica | f | Characters in Greek Mythology | |
| Mustafa I | m | Islamic Caliphs, Ottoman Sultans | |
| Mustafa II | m | Islamic Caliphs, Ottoman Sultans | |
| Mustafa III | m | Islamic Caliphs, Ottoman Sultans | |
| Mustafa IV | m | Islamic Caliphs, Ottoman Sultans | |
| Mustafa Kemal Atatürk | m | Notable Military Figures, Turkish Presidents and Prime Ministers | |
| Mustardseed | m | Shakespearian Characters | |
| Mutien-Marie Wiaux | m | Saints | |
| Mutius | m | Shakespearian Characters | |
| Meiji | m | Japanese Emperors | |
| Mýa | f | Notable Musicians | |
| Myer Prinstein | m | Olympic Medalists | |
| Mykelti Williamson | m | Notable Actors and Entertainers | |
| Mykola Avilov | m | Olympic Medalists | |
| Mykola Konrad | m | Saints | |
| Mykola Tsehelskyi | m | Saints | |
| Mykolai Charnetsky | m | Saints | |
| Myleene Klass | f | Notable Musicians | |
| Mylène Farmer | f | Notable Musicians | |
| Mylène Lazare | f | Olympic Medalists | |
| Myles Mitchell | m | Fictional Characters from Television | |
| Mynes | m | Characters in Greek Mythology | |
| Mynes | m | Characters in Greek Mythology | |
| Myra De Groot | f | Notable Actors and Entertainers | |
| Myra Monkhouse | f | Fictional Characters from Television | |
| Myraces | m | Characters in Greek Mythology | |
| Myrddin Wyllt | m | Characters in Celtic Mythology | |
| Myrina | f | Characters in Greek Mythology | |
| Myrmidon | m | Characters in Greek Mythology | |
| Myrmidone | f | Characters in Greek Mythology | |
| Myron of Eleutherae | m | Notable Artists | |
| Myron Scholes | m | Nobel Prize Winners | |
| Myrtle Snow | f | Fictional Characters from Television | |
| Myrto | f | Characters in Greek Mythology | |
| Myrtoessa | f | Characters in Greek Mythology | |
| Mystis | f | Characters in Greek Mythology | |
| Mytilene | f | Characters in Greek Mythology | |
| Jeong Myung-hee | f | Olympic Medalists | |
| Chao Na | f | Olympic Medalists | |
| Li Na | f | Olympic Medalists | |
| Wang Na | f | Olympic Medalists | |
| Naam | m | Biblical Characters | |
| Naamah | f | Biblical Characters | |
| Naamah | f | Biblical Characters | |
| Naarah | f | Biblical Characters | |
| Naarai | m | Biblical Characters | |
| Nabal | m | Biblical Characters | |
| Naboth | m | Biblical Characters | |
| Nacho Monreal | m | Notable Athletes | |
| Nachon | m | Biblical Characters | |
| Nadab | m | Biblical Characters, Israelite and Judean Kings | |
| Nadezhda Ilyina | f | Olympic Medalists | |
| Nadezhda Khnykina-Dvalishvili | f | Olympic Medalists | |
| Nadezhda Konyayeva | f | Olympic Medalists | |
| Nadezhda Olizarenko | f | Olympic Medalists | |
| Nadezhda Shuvayeva-Olkhova | f | Olympic Medalists | |
| Nadia Comăneci | f | Notable Athletes, Olympic Medalists | |
| Nadia Petrova | f | Notable Athletes, Olympic Medalists | |
| Nadia Sawalha | f | Notable Actors and Entertainers | |
| Nadine | f | Hurricanes and Tropical Storms | |
| Nadine | f | Fictional Characters from Song Titles | |
| Nadine Gordimer | f | Nobel Prize Winners, Notable Writers | |
| Nadka Golcheva | f | Olympic Medalists | |
| Nadzeya Papok | f | Olympic Medalists | |
| Naeem Islam | m | Notable Athletes | |
| Naftali Temu | m | Olympic Medalists | |
| Go-Sai | m | Japanese Emperors | |
| Nagarjuna | m | Notable Philosophers and Thinkers | |
| Naggai | m | Biblical Characters | |
| Naguib Mahfouz | m | Nobel Prize Winners, Notable Writers | |
| Naham | m | Biblical Characters | |
| Nahamani | m | Biblical Characters | |
| Naharai | m | Biblical Characters | |
| Nahbi | m | Biblical Characters | |
| Nahor | m | Biblical Characters | |
| Nahor | m | Biblical Characters | |
| Nahshon | m | Biblical Characters | |
| Nahum | m | Biblical Characters | |
| Nahum | m | Biblical Characters | |
| Naim Kryeziu | m | Notable Athletes | |
| Naim Terbunja | m | Notable Athletes | |
| Tenji | m | Japanese Emperors | |
| Kim Nam-soon | f | Olympic Medalists | |
| Zhang Nan | m | Olympic Medalists | |
| Nana Mouskouri | f | Notable Musicians | |
| Nancy | f | Fictional Characters from Song Titles | |
| Nancy | f | Fictional Characters from Books | |
| Nancy Bartlett | f | Fictional Characters from Television | |
| Nancy Drew | f | Fictional Characters from Books | |
| Nancy Garapick | f | Olympic Medalists | |
| Nancy Hicks-Gribble | f | Fictional Characters from Television | |
| Nancy Hogshead-Makar | f | Olympic Medalists | |
| Nancy Langat | f | Olympic Medalists | |
| Nancy Lieberman | f | Hall-of-Famers, Notable Athletes, Olympic Medalists | |
| Nancy Mackay | f | Olympic Medalists | |
| Nancy O'Dell | f | Notable Actors and Entertainers | |
| Nancy Ramey | f | Olympic Medalists | |
| Nancy Reagan | f | American First Ladies | |
| Nancy Simons | f | Olympic Medalists | |
| Nancy Stockwell | f | Fictional Characters from Movies | |
| Nándor Hidegkuti | m | Notable Athletes | |
| Nanette Fabray | f | Emmy Award Winners, Notable Actors and Entertainers | |
| Nani | m | Notable Athletes | |
| Nani Widjaja | f | Notable Actors and Entertainers | |
| Nanna | f | Characters in Norse Mythology | |
| Naomi | f | Biblical Characters | |
| Naomi Bennett | f | Fictional Characters from Television | |
| Naomi León | f | Fictional Characters from Books | |
| Naomi Mills | f | Fictional Characters from Movies | |
| Naomie Harris | f | Notable Actors and Entertainers | |
| Nap Lajoie | m | Hall-of-Famers, Notable Athletes | |
| Nape | f | Characters in Greek Mythology | |
| Naphish | m | Biblical Characters | |
| Naphtali | m | Biblical Characters | |
| Louis-Napoléon Bonaparte | m | Frankish and French Kings, French Presidents and Prime Ministers | |
| Napoleon Bonaparte | m | Frankish and French Kings, Notable Military Figures | |
| Napoleon Dynamite | m | Fictional Characters from Movies | |
| P. V. Narasimha Rao | m | Indian Presidents and Prime Ministers | |
| Narcís Ventalló | m | Olympic Medalists | |
| Narcisa de Jesús Martillo y Morán | f | Saints | |
| Narcissa Malfoy | f | Harry Potter Characters | |
| Narcissus | m | Characters in Greek Mythology | |
| Narziß | m | Fictional Characters from Books | |
| Nas | m | Notable Musicians | |
| Nasamon | m | Characters in Greek Mythology | |
| Naseem Begum | f | Notable Musicians | |
| Nash Bridges | m | Fictional Characters from Television | |
| Nasir Hossain | m | Notable Athletes | |
| Nasir ud-Din Mahmud | m | Indian Sultans and Emperors | |
| Nasir ud-Din Muhammad Shah | m | Indian Sultans and Emperors | |
| Nasir ud-Din Mahmud Shah Tughluq | m | Indian Sultans and Emperors | |
| Nastes | m | Characters in Greek Mythology | |
| Nastia Liukin | f | Olympic Medalists | |
| Nat Bussichio | m | Fictional Characters from Television | |
| Nat "King" Cole | m | Notable Musicians | |
| Nat Holman | m | Hall-of-Famers | |
| Natalia Boa Vista | f | Fictional Characters from Television | |
| Natalia Goncharova | f | Olympic Medalists | |
| Natalia Kutuzova | f | Olympic Medalists | |
| Natalia Tułasiewicz | f | Saints | |
| Natalie Cole | f | Grammy Award Winners, Notable Musicians | |
| Natalie Diaz | f | Notable Writers | |
| Natalie Portman | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Natalie Steward | f | Olympic Medalists | |
| Nataliya Dobrynska | f | Olympic Medalists | |
| Nataliya Kuznetsova-Lobanova | f | Olympic Medalists | |
| Natallia Mikhnevich | f | Olympic Medalists | |
| Natallia Sazanovich | f | Olympic Medalists | |
| Natalya Bochina | f | Olympic Medalists | |
| Natalya Butuzova | f | Olympic Medalists | |
| Natalya Ivanova | f | Olympic Medalists | |
| Natalya Meshcheryakova | f | Olympic Medalists | |
| Natalya Pechonkina | f | Olympic Medalists | |
| Natalya Shikolenko | f | Olympic Medalists | |
| Natalya Sokolova | f | Olympic Medalists | |
| Natalya Strunnikova | f | Olympic Medalists | |
| Natalya Voronova | f | Olympic Medalists | |
| Natalya Zasulskaya | f | Olympic Medalists | |
| Natascha Ragosina | f | Notable Athletes | |
| Natasha Kaiser-Brown | f | Olympic Medalists | |
| Natasha Rostova | f | Fictional Characters from Books | |
| Nate | m | Hurricanes and Tropical Storms | |
| Nate | m | Hurricanes and Tropical Storms | |
| Nate Archibald | m | Hall-of-Famers, Notable Athletes | |
| Nate Archibald | m | Fictional Characters from Books, Fictional Characters from Television | |
| Nate Fisher | m | Fictional Characters from Television | |
| Nate Foster | m | Fictional Characters from Movies | |
| Nate Nelson | m | Rock and Roll Hall-of-Famers | |
| Nate Thurmond | m | Hall-of-Famers, Notable Athletes | |
| Nath Í | m | Irish Kings | |
| Nathalie Delon | f | Notable Actors and Entertainers | |
| Nathan | m | Biblical Characters | |
| Nathan | m | Biblical Characters | |
| Nathan Horton | m | Fictional Characters from Television | |
| Nathan Ingram | m | Fictional Characters from Television | |
| Nathan Petrelli | m | Fictional Characters from Television | |
| Nathan Robertson | m | Olympic Medalists | |
| Nathan Söderblom | m | Nobel Prize Winners | |
| Nathan Stone | m | Fictional Characters from Television | |
| Nathaniel | m | Shakespearian Characters | |
| Sir Nathaniel | m | Shakespearian Characters | |
| Nathaniel John Cartmell | m | Olympic Medalists | |
| Nathaniel Fisher | m | Fictional Characters from Television | |
| Nathan-Melech | m | Biblical Characters | |
| Natio | f | Characters in Roman Mythology | |
| Natko Zrnčić-Dim | m | Notable Athletes | |
| Natti Natasha | f | Notable Musicians | |
| Naucrate | f | Characters in Greek Mythology | |
| Nausicaa | f | Characters in Greek Mythology | |
| Nausidame | f | Characters in Greek Mythology | |
| Nausimedon | m | Characters in Greek Mythology | |
| Nausithoe | f | Characters in Greek Mythology | |
| Naya Rivera | f | Notable Actors and Entertainers, Notable Musicians | |
| Nayvadius "Future" Cash | m | Notable Musicians | |
| Nazarene | m | Biblical Characters | |
| Nazaria Ignacia March Mesa | f | Saints | |
| Neal Skupski | m | Notable Athletes | |
| Neariah | m | Biblical Characters | |
| Neariah | m | Biblical Characters | |
| Nebai | m | Biblical Characters | |
| Nebaioth | m | Biblical Characters | |
| Nebat | m | Biblical Characters | |
| Nabu | m | Biblical Characters, Other Mythological Characters | |
| Nebo | m | Biblical Characters | |
| Nebojša Zorkić | m | Olympic Medalists | |
| Nebuchadnezzar | m | Biblical Characters, Other Royalty | |
| Nebusarsekim | m | Biblical Characters | |
| Nebushazban | m | Biblical Characters | |
| Nebuzaradan | m | Biblical Characters | |
| Necho II | m | Biblical Characters, Egyptian Pharaohs | |
| Nectanebo I | m | Egyptian Pharaohs | |
| Nectanebo II | m | Egyptian Pharaohs | |
| Ned Banks | m | Fictional Characters from Television | |
| Ned Hanlon | m | Hall-of-Famers | |
| Ned Kelly | m | Notable Evildoers | |
| Ned Stark | m | Fictional Characters from Books, Fictional Characters from Television | |
| Neda | f | Characters in Greek Mythology | |
| Neda Arnerić | f | Notable Actors and Entertainers | |
| Nedabiah | m | Biblical Characters | |
| Neelie Kroes | f | Notable Politicians and Statespeople | |
| Nehemiah | m | Biblical Characters | |
| Nehushta | f | Biblical Characters | |
| Neil Armstrong | m | Notable Explorers and Adventurers | |
| Neil Colville | m | Hall-of-Famers | |
| Neil Diamond | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Neil Johnston | m | Hall-of-Famers, Notable Athletes | |
| Neil MacNeill | m | Fictional Characters from Books, Fictional Characters from Television | |
| Neil Peart | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Neil Walker | m | Olympic Medalists | |
| Neil Young | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Nekoda | m | Biblical Characters | |
| Nel van Vliet | f | Olympic Medalists | |
| Neleus | m | Characters in Greek Mythology | |
| Nélida Bilbao | f | Notable Actors and Entertainers | |
| Nell | f | Shakespearian Characters | |
| Nella Larsen | f | Notable Writers | |
| Nelleke Penninx | f | Olympic Medalists | |
| Nellie Fox | m | Hall-of-Famers, Most Valuable Players, Notable Athletes | |
| Nellie Kim | f | Notable Athletes, Olympic Medalists | |
| Nellie Taft | f | American First Ladies | |
| Nello Santi | m | Notable Musicians | |
| Nelly | m | Notable Musicians | |
| Nelly Sachs | f | Nobel Prize Winners, Notable Writers | |
| Nelo | f | Characters in Greek Mythology | |
| Nels Stewart | m | Hall-of-Famers, Most Valuable Players | |
| Nelson Chelle | m | Olympic Medalists | |
| Nelson Mandela | m | Nobel Prize Winners, Notable Activists and Revolutionaries, Other Leaders | |
| Nemea | f | Characters in Greek Mythology | |
| Nemertes | f | Characters in Greek Mythology | |
| Nemesis | f | Characters in Greek Mythology | |
| Nemo | m | Fictional Characters from Movies | |
| Nemuel | m | Biblical Characters | |
| Nemuel | m | Biblical Characters | |
| Neo | m | Fictional Characters from Movies | |
| Neomeris | f | Characters in Greek Mythology | |
| Neophron | m | Characters in Greek Mythology | |
| Neoptolemus | m | Characters in Greek Mythology | |
| Nephalion | m | Characters in Greek Mythology | |
| Nepheg | m | Biblical Characters | |
| Nepheg | m | Biblical Characters | |
| Nephele | f | Characters in Greek Mythology | |
| Nepherites I | m | Egyptian Pharaohs | |
| Neptune | m | Characters in Roman Mythology | |
| Ner | m | Biblical Characters | |
| Ner | m | Biblical Characters | |
| Nera White | f | Hall-of-Famers, Notable Athletes | |
| Nereis | f | Characters in Greek Mythology | |
| Nereu Ramos | m | Brazilian Presidents | |
| Nereus | m | Characters in Greek Mythology | |
| Nereus | m | Biblical Characters | |
| Nergal | m | Biblical Characters, Other Mythological Characters | |
| Nergalsarezer | m | Biblical Characters | |
| Nergalsarezer | m | Biblical Characters | |
| Neri | m | Biblical Characters | |
| Neriah | m | Biblical Characters | |
| Nerissa | f | Shakespearian Characters | |
| Nerses I the Great | m | Saints | |
| Nesaea | f | Characters in Greek Mythology | |
| Nesim Tahirović | m | Notable Artists | |
| Neso | f | Characters in Greek Mythology | |
| Nesrin Javadzadeh | f | Notable Actors and Entertainers | |
| Nesson | m | Characters in Greek Mythology | |
| Nestor | m | Hurricanes and Tropical Storms | |
| Nestor | m | Characters in Greek Mythology, Shakespearian Characters | |
| Néstor Carbonell | m | Notable Actors and Entertainers | |
| Netti Witziers-Timmer | f | Olympic Medalists | |
| Nevill Francis Mott | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Neville Chamberlain | m | British Prime Ministers | |
| Neville Hayes | m | Olympic Medalists | |
| Neville Longbottom | m | Fictional Characters from Books, Harry Potter Characters | |
| Newt Gingrich | m | Notable Politicians and Statespeople | |
| Newt Scamander | m | Harry Potter Characters | |
| Nezha Bidouane | f | Olympic Medalists | |
| Neziah | m | Biblical Characters | |
| Ngawang Lobsang Gyatso | m | Other Religious Leaders | |
| Võ Nguyên Giáp | m | Notable Military Figures | |
| Xiong Ni | m | Olympic Medalists | |
| Nia Segamain | m | Characters in Celtic Mythology, Irish Kings | |
| Nia Vardalos | f | Notable Actors and Entertainers, Notable Filmmakers | |
| Niall Caille | m | Irish Kings | |
| Niall Frossach | m | Irish Kings | |
| Niall Glúndub | m | Irish Kings | |
| Niall Noígíallach | m | Irish Kings | |
| Niauius | m | Characters in Greek Mythology | |
| Nibhaz | m | Biblical Characters | |
| Nicanor | m | Shakespearian Characters | |
| Nicanor the Deacon | m | Biblical Characters, Saints | |
| Nicasius of Die | m | Saints | |
| Nicasius Janssen of Heeze | m | Saints | |
| Niccolò Machiavelli | m | Notable Philosophers and Thinkers | |
| Niccolò Paganini | m | Notable Musicians | |
| Nicephorus I | m | Roman and Byzantine Emperors | |
| Nicephorus II Phocas | m | Roman and Byzantine Emperors | |
| Nicephorus III Botaniates | m | Roman and Byzantine Emperors | |
| Niceta Plaja Xifra de San Prudencia | f | Saints | |
| Nicholas | m | Bishops of Rome and the Popes, Saints | |
| Nicholas | m | Bishops of Rome and the Popes | |
| Nicholas | m | Hurricanes and Tropical Storms | |
| Nicholas | m | Shakespearian Characters | |
| Nicholas II | m | Bishops of Rome and the Popes | |
| Nicholas III | m | Bishops of Rome and the Popes | |
| Nicholas IV | m | Bishops of Rome and the Popes | |
| Nicholas of Cusa | m | Notable Philosophers and Thinkers | |
| Nicholas V | m | Bishops of Rome and the Popes | |
| Nicholas Hooper | m | Notable Musicians | |
| Nicholas Bunkerd Kitbamrung | m | Saints | |
| Nicholas Nickleby | m | Fictional Characters from Books | |
| Nicholas Rubashov | m | Fictional Characters from Books | |
| Sir Nicholas Vaux | m | Shakespearian Characters | |
| Nick Barkley | m | Fictional Characters from Television | |
| Nick Biancavilla | m | Fictional Characters from Television | |
| Nick Bolen | m | Fictional Characters from Television | |
| Nick Bottom | m | Shakespearian Characters | |
| Nick Buoniconti | m | Hall-of-Famers | |
| Nick Carraway | m | Fictional Characters from Books | |
| Nick Carter | m | Notable Musicians | |
| Nick Cassavetes | m | Notable Actors and Entertainers, Notable Filmmakers | |
| Nick Cave | m | Notable Musicians | |
| Nick Easter | m | Notable Athletes | |
| Nick Fallon | m | Fictional Characters from Television | |
| Nick Ffrost | m | Olympic Medalists | |
| Nick Frost | m | Notable Actors and Entertainers | |
| Nick George | m | Fictional Characters from Television | |
| Nick Gillingham | m | Olympic Medalists | |
| Nick Goepper | m | Olympic Medalists | |
| Nick Hysong | m | Olympic Medalists | |
| Nick Jonas | m | Notable Actors and Entertainers, Notable Musicians | |
| Nick Kyrgios | m | Notable Athletes | |
| Nick Lachey | m | Notable Musicians | |
| Nick Marone | m | Fictional Characters from Television | |
| Nick Massi | m | Rock and Roll Hall-of-Famers | |
| Nick McCrory | m | Olympic Medalists | |
| Nick Nolte | m | Notable Actors and Entertainers | |
| Nick O'Leary | m | Fictional Characters from Books, Fictional Characters from Movies | |
| Nick Phipps | m | Notable Athletes | |
| Nick Rimando | m | Notable Athletes | |
| Nick Ryan | m | Fictional Characters from Television | |
| Nick Skelton | m | Olympic Medalists | |
| Nick Stokes | m | Fictional Characters from Television | |
| Nick Swardson | m | Notable Actors and Entertainers | |
| Nick Thoman | m | Olympic Medalists | |
| Nick Torres | m | Fictional Characters from Television | |
| Nick Vera | m | Fictional Characters from Television | |
| Nick Whitehead | m | Olympic Medalists | |
| Nick Willis | m | Olympic Medalists | |
| Nick Winter | m | Olympic Medalists | |
| Nicki Grant | f | Fictional Characters from Television | |
| Nicklas Lidström | m | Hall-of-Famers, Notable Athletes | |
| Nicky Byrne | m | Notable Musicians | |
| Nicky Katsopolis | m | Fictional Characters from Television | |
| Nicky Stevens | f | Eurovision Song Contest Winners | |
| Nico | f | Notable Actors and Entertainers, Notable Musicians | |
| Nico Hülkenberg | m | Notable Athletes | |
| Nico Landeweerd | m | Olympic Medalists | |
| Nicocreon | m | Characters in Greek Mythology | |
| Nicodamas | m | Characters in Greek Mythology | |
| Nicodemus | m | Biblical Characters, Saints | |
| Nicola of Gesturi | m | Saints | |
| Nicola White | f | Olympic Medalists | |
| Nicolaas Bloembergen | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Nicolaas Pieck | m | Saints | |
| Nicolaas Pierson | m | Dutch Prime Ministers | |
| Nicolae Ceaușescu | m | Romanian Presidents and Prime Ministers | |
| Nicolae Iorga | m | Romanian Presidents and Prime Ministers | |
| Nicolae Văcăroiu | m | Romanian Presidents and Prime Ministers | |
| Nicolas | m | Biblical Characters | |
| Nicolas of Sweden | m | Other Royalty | |
| Nicolas Cage | m | Notable Actors and Entertainers, Oscar Award Winners | |
| Nicolas Flamel | m | Harry Potter Characters, Other Notables | |
| Nicolás García | m | Olympic Medalists | |
| Nicolas Poussin | m | Notable Artists | |
| Nicolas Roeg | m | Notable Filmmakers | |
| Nicolas Sarkozy | m | French Presidents and Prime Ministers | |
| Nicolas Steno | m | Notable Scientists and Inventors, Saints | |
| Nicole | f | Hurricanes and Tropical Storms | |
| Nicole | f | Fictional Characters from Song Titles | |
| Nicole Kidman | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Nicole Livingstone | f | Olympic Medalists | |
| Nicolette van Dam | f | Notable Actors and Entertainers | |
| Nictopolion | m | Saints | |
| Nida Senff | f | Olympic Medalists | |
| Nida Yasir | f | Notable Actors and Entertainers | |
| Niecy Jackson | f | Fictional Characters from Television | |
| Nieky Holzken | m | Notable Athletes | |
| Niel Gow | m | Notable Musicians | |
| Niels Henrik Abel | m | Notable Philosophers and Thinkers | |
| Niels Ryberg Finsen | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Niels Kaj Jerne | m | Nobel Prize Winners | |
| Nigel | m | Fictional Characters from Song Titles | |
| Nigel Farage | m | Notable Politicians and Statespeople | |
| Nigella Lawson | f | Notable Actors and Entertainers | |
| Nijolė Sabaitė | f | Olympic Medalists | |
| Nijs Korevaar | m | Olympic Medalists | |
| Nika Gvaramia | m | Notable Politicians and Statespeople | |
| Nika Kacharava | m | Notable Athletes | |
| Nika Kvekveskiri | m | Notable Athletes | |
| Nika Melia | m | Notable Politicians and Statespeople | |
| Nika Rurua | m | Notable Politicians and Statespeople | |
| Nike | f | Characters in Greek Mythology | |
| Niki Bakoyianni | f | Olympic Medalists | |
| Niki Lauda | m | Notable Athletes | |
| Niki Sanders | f | Fictional Characters from Television | |
| Nikita | f | Fictional Characters from Song Titles | |
| Nikita Khrushchev | m | Other Leaders | |
| Nikki McCray | f | Olympic Medalists | |
| Nikki Parker | f | Fictional Characters from Television | |
| Nikki Reed | f | Notable Actors and Entertainers | |
| Nikki Stone | f | Olympic Medalists | |
| Nikkie de Jager | f | Notable Actors and Entertainers | |
| Niklaus von Flüe | m | Saints | |
| Nikola Jokić | m | Most Valuable Players, Notable Athletes | |
| Nikola Karabatić | m | Notable Athletes, Olympic Medalists | |
| Nikolaas Tinbergen | m | Nobel Prize Winners | |
| Nikolai I | m | Russian Grand Dukes and Tsars | |
| Nikolai II | m | Russian Grand Dukes and Tsars | |
| Nikolai of Denmark | m | Other Royalty | |
| Nikolai Gogol | m | Notable Writers | |
| Nikolai Kuznetsov | m | Olympic Medalists | |
| Nikolai Melnikov | m | Olympic Medalists | |
| Nikolai Pankin | m | Olympic Medalists | |
| Nikolai Rimsky-Korsakov | m | Notable Musicians | |
| Nikolai Rostov | m | Fictional Characters from Books | |
| Nikolai Yevseyev | m | Olympic Medalists | |
| Nikolaos Georgantas | m | Olympic Medalists | |
| Nikolaos Kalogeropoulos | m | Greek Prime Ministers | |
| Nikolaos Siranidis | m | Olympic Medalists | |
| Nikolaos Stratos | m | Greek Prime Ministers | |
| Nikolaos Triantafyllakos | m | Greek Prime Ministers | |
| Nikolaus of Liechtenstein | m | Other Royalty | |
| Nikolaus Gross | m | Saints | |
| Nikolay Basov | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Nikolay Chernetskiy | m | Olympic Medalists | |
| Nikolay Deryugin | m | Olympic Medalists | |
| Nikolay Kalashnikov | m | Olympic Medalists | |
| Nikolay Kirov | m | Olympic Medalists | |
| Nikolay Kolesnikov | m | Olympic Medalists | |
| Nikolay Kozlov | m | Olympic Medalists | |
| Nikolay Maksimov | m | Olympic Medalists | |
| Nikolay Semyonov | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Nikolay Sidorov | m | Olympic Medalists | |
| Nikolay Smaga | m | Olympic Medalists | |
| Nikolay Sokolov | m | Olympic Medalists | |
| Nikolina Shtereva | f | Olympic Medalists | |
| Nikoloz Gilauri | m | Georgian Presidents and Prime Ministers | |
| Nikoloz Lekishvili | m | Georgian Presidents and Prime Ministers | |
| Nikos Galis | m | Hall-of-Famers, Notable Athletes | |
| Nikša Dobud | m | Notable Athletes, Olympic Medalists | |
| Niles | m | Fictional Characters from Television | |
| Nilo Peçanha | m | Brazilian Presidents | |
| Nils Johansson | m | Olympic Medalists | |
| Nils Liedholm | m | Notable Athletes | |
| Nils Nilsson | m | Olympic Medalists | |
| Nils Skoglund | m | Olympic Medalists | |
| Nilton Pacheco | m | Olympic Medalists | |
| Nílton Santos | m | Notable Athletes | |
| Nilus | m | Characters in Greek Mythology | |
| Nimatullah Youssef Kassab Al-Hardini | m | Saints | |
| Nimrod | m | Biblical Characters | |
| Nimrod | m | Fictional Characters from Television | |
| Nimrod Greenwood | m | Olympic Medalists | |
| Nimshi | m | Biblical Characters | |
| Nimue | f | Arthurian Characters | |
| Nina Bawden | f | Notable Writers | |
| Nina Campbell | f | Fictional Characters from Television | |
| Nina Dumbadze | f | Olympic Medalists | |
| Nina Feeney | f | Fictional Characters from Television | |
| Nina Ponomaryova | f | Olympic Medalists | |
| Nina Sharp | f | Fictional Characters from Television | |
| Nina Simone | f | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Nina Toussaint-White | f | Notable Actors and Entertainers | |
| Nina Vislova | f | Olympic Medalists | |
| Nina Zhivanevskaya | f | Olympic Medalists | |
| Nina Zyuskova | f | Olympic Medalists | |
| Ninel Krutova | f | Olympic Medalists | |
| Ninette de Valois | f | Notable Actors and Entertainers | |
| Ding Ning | f | Notable Athletes, Olympic Medalists | |
| Ningal | f | Other Mythological Characters | |
| Nino Burjanadze | f | Georgian Presidents and Prime Ministers | |
| Nintoku | m | Japanese Emperors | |
| Niobe | f | Characters in Greek Mythology | |
| Niobe | f | Characters in Greek Mythology | |
| Nisas | m | Characters in Greek Mythology | |
| Nisien | m | Characters in Celtic Mythology | |
| Nisroch | m | Biblical Characters, Other Mythological Characters | |
| Noadiah | m | Biblical Characters | |
| Noadiah | f | Biblical Characters | |
| Noah | m | Biblical Characters | |
| Noah | f | Biblical Characters | |
| Noah Bennet | m | Fictional Characters from Television | |
| Noah Hunter | m | Fictional Characters from Television | |
| Noah Ngenyi | m | Olympic Medalists | |
| Noam Chomsky | m | Notable Philosophers and Thinkers | |
| Nobah | m | Biblical Characters | |
| Noble Sissle | m | Notable Musicians | |
| Rokujo | m | Japanese Emperors | |
| Oda Nobunaga | m | Notable Military Figures | |
| Nobutaka Taguchi | m | Olympic Medalists | |
| Noé Hernández | m | Olympic Medalists | |
| Noe Ramishvili | m | Georgian Presidents and Prime Ministers | |
| Noe Zhordania | m | Georgian Presidents and Prime Ministers | |
| Noel | m | Hurricanes and Tropical Storms | |
| Noël Coward | m | Notable Musicians, Notable Writers | |
| Noel Crane | m | Fictional Characters from Television | |
| Noël Pinot | m | Saints | |
| Noel Purcell | m | Olympic Medalists | |
| Noemi | f | Notable Musicians | |
| Noemí Simonetto de Portela | f | Olympic Medalists | |
| Nogah | m | Biblical Characters | |
| Nohah | m | Biblical Characters | |
| Nola Falacci | f | Fictional Characters from Television | |
| Nolan Ryan | m | Hall-of-Famers, Notable Athletes | |
| Nomia | f | Characters in Greek Mythology | |
| Nomion | m | Characters in Greek Mythology | |
| Nomion | m | Characters in Greek Mythology | |
| Nomion | m | Characters in Greek Mythology | |
| Nonso Anozie | m | Notable Actors and Entertainers | |
| Nora Huntington | f | Fictional Characters from Television | |
| Nora Montgomery | f | Fictional Characters from Television | |
| Norah Jones | f | Grammy Award Winners, Notable Musicians | |
| Norah Silverberg | f | Fictional Characters from Books, Fictional Characters from Movies | |
| Norax | m | Characters in Greek Mythology | |
| Norbert of Xanten | m | Saints | |
| Norbert Rózsa | m | Olympic Medalists | |
| Norbert Schemansky | m | Olympic Medalists | |
| Norm Macdonald | m | Notable Actors and Entertainers | |
| Norm Ullman | m | Hall-of-Famers | |
| Norm Van Brocklin | m | Hall-of-Famers | |
| Norma Croker-Fleming | f | Olympic Medalists | |
| Norma Desmond | f | Fictional Characters from Movies | |
| Norma Shearer | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Norma Thrower | f | Olympic Medalists | |
| Norman Angell | m | Nobel Prize Winners | |
| Norman Borlaug | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Norman Briggs | m | Fictional Characters from Television | |
| Norman Alexander "Red" Dutton | m | Hall-of-Famers | |
| Norman Julius "Boomer" Esiason | m | Most Valuable Players | |
| Norman Foster | m | Notable Artists | |
| Norman Haworth | m | Nobel Prize Winners | |
| Norman Mailer | m | Notable Writers, Pulitzer Award Winners | |
| Norman Foster Ramsey Jr. | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Norman Read | m | Olympic Medalists | |
| Norman Ross | m | Olympic Medalists | |
| Norman "Turkey" Stearnes | m | Hall-of-Famers | |
| Norman "Lechero" St. John | m | Fictional Characters from Television | |
| Norman Taber | m | Olympic Medalists | |
| Norman Taurog | m | Notable Filmmakers, Oscar Award Winners | |
| Norway Jackes | m | Olympic Medalists | |
| Noureddine Morceli | m | Olympic Medalists | |
| Nouria Mérah-Benida | f | Olympic Medalists | |
| Nova Widianto | m | Olympic Medalists | |
| Novak Đoković | m | Notable Athletes, Olympic Medalists | |
| Nuadu Finn Fáil | m | Characters in Celtic Mythology, Irish Kings | |
| Nuadu Necht | m | Characters in Celtic Mythology, Irish Kings | |
| Numa Pompilius | m | Characters in Roman Mythology | |
| Númendil | m | Tolkien's Characters | |
| Nun | m | Biblical Characters | |
| Nunu | f | Fictional Characters from Books | |
| Nunzio Sulprizio | m | Saints | |
| Nurmagomed Shanavazov | m | Olympic Medalists | |
| Nut | f | Characters in Egyptian Mythology | |
| Nycteis | f | Characters in Greek Mythology | |
| Nykyta Budka | m | Saints | |
| Nym | m | Shakespearian Characters | |
| Nympha | f | Biblical Characters | |
| Nymphadora Tonks | f | Harry Potter Characters | |
| Nynke Laverman | f | Notable Musicians | |
| Nyx | f | Characters in Greek Mythology | |
| Obadiah | m | Biblical Characters | |
| Obal | m | Biblical Characters | |
| Obed-Edom | m | Biblical Characters | |
| Obed-Edom | m | Biblical Characters | |
| Obed-Edom | m | Biblical Characters | |
| Oberon | m | Fictional Characters from Plays and Musicals, Shakespearian Characters | |
| Obil | m | Biblical Characters | |
| Obrimus | m | Characters in Greek Mythology | |
| Oceanus | m | Characters in Greek Mythology | |
| Ocelas | m | Characters in Greek Mythology | |
| Ochimus | m | Characters in Greek Mythology | |
| Ochran | m | Biblical Characters | |
| Ocresia | f | Characters in Greek Mythology | |
| Octavia | f | Shakespearian Characters | |
| Octavian Goga | m | Romanian Presidents and Prime Ministers | |
| Octavio Paz | m | Nobel Prize Winners, Notable Writers | |
| Ocyale | f | Characters in Greek Mythology | |
| Ocydrome | f | Characters in Greek Mythology | |
| Ocynoe | f | Characters in Greek Mythology | |
| Ocypete | f | Characters in Greek Mythology | |
| Ocypete | f | Characters in Greek Mythology | |
| Ocypete | f | Characters in Greek Mythology | |
| Ocyrrhoe | f | Characters in Greek Mythology | |
| Ocyrrhoe | f | Characters in Greek Mythology | |
| Ocyrrhoe | f | Characters in Greek Mythology | |
| Oded | m | Biblical Characters | |
| Oded | m | Biblical Characters | |
| Odette | f | Hurricanes and Tropical Storms | |
| Odin | m | Characters in Norse Mythology | |
| Odo Count of Paris | m | Frankish and French Kings | |
| Ödön Földessy | m | Olympic Medalists | |
| Ödön Gróf | m | Olympic Medalists | |
| Odrussa | f | Characters in Greek Mythology | |
| Odvar Nordli | m | Norwegian Prime Ministers | |
| Odysseas Elytis | m | Nobel Prize Winners, Notable Writers | |
| Odysseus Eskitzoglou | m | Olympic Medalists | |
| Yomei | m | Japanese Emperors | |
| Oeax | m | Characters in Greek Mythology | |
| Oechalia | f | Characters in Greek Mythology | |
| Oedipus | m | Characters in Greek Mythology | |
| Oeme | f | Characters in Greek Mythology | |
| Oeneus | m | Characters in Greek Mythology | |
| Oengus mac Fergus | m | Scottish Kings and Queens | |
| Óengus of Tallaght | m | Saints | |
| Óengus Ollom | m | Characters in Celtic Mythology, Irish Kings | |
| Óengus Olmucaid | m | Characters in Celtic Mythology, Irish Kings | |
| Óengus Tuirmech Temrach | m | Characters in Celtic Mythology, Irish Kings | |
| Oeno | f | Characters in Greek Mythology | |
| Oenomaus | m | Characters in Greek Mythology | |
| Oenone | f | Characters in Greek Mythology | |
| Ofra Haza | f | Notable Musicians | |
| Og | m | Biblical Characters | |
| Oggy | m | Fictional Characters from Movies, Fictional Characters from Television | |
| Ognjen Kržić | m | Olympic Medalists | |
| Ohad | m | Biblical Characters | |
| Yuryaku | m | Japanese Emperors | |
| Ohel | m | Biblical Characters | |
| Oholah | f | Biblical Characters | |
| Oholibah | f | Biblical Characters | |
| Óin | m | Tolkien's Characters | |
| Oinanthe | f | Characters in Greek Mythology | |
| Oizys | f | Characters in Greek Mythology | |
| Ojin | m | Japanese Emperors | |
| Yun Ok-hee | f | Olympic Medalists | |
| Meisho | f | Japanese Emperors | |
| Ola Ullsten | m | Swedish Prime Ministers | |
| Olabisi Afolabi | f | Olympic Medalists | |
| Ólafur Jóhannesson | m | Icelandic Presidents and Prime Ministers | |
| Ólafur Ragnar Grímsson | m | Icelandic Presidents and Prime Ministers | |
| Ólafur Thors | m | Icelandic Presidents and Prime Ministers | |
| Olatunde "O-T" Fagbenle | m | Notable Actors and Entertainers | |
| Olav | m | Norwegian Kings and Queens | |
| Olav III the Quiet | m | Norwegian Kings and Queens | |
| Olav V | m | Norwegian Kings and Queens, Olympic Medalists | |
| Oluf II | m | Danish Kings and Queens, Norwegian Kings and Queens | |
| Oldřich Nejedlý | m | Notable Athletes | |
| Ole Einar Bjørndalen | m | Notable Athletes, Olympic Medalists | |
| Oleg | m | Russian Grand Dukes and Tsars | |
| Oleg Fedoseyev | m | Olympic Medalists | |
| Oleg Khodkov | m | Olympic Medalists | |
| Oleh Psiuk | m | Eurovision Song Contest Winners | |
| Oleksandr Belostenny | m | Olympic Medalists | |
| Oleksandr Krykun | m | Olympic Medalists | |
| Oleksandr Sydorenko | m | Olympic Medalists | |
| Oleksiy Pryhorov | m | Olympic Medalists | |
| Olen | m | Characters in Greek Mythology | |
| Olena Zhupina | f | Olympic Medalists | |
| Olena Zhyrko | f | Olympic Medalists | |
| Olesya Barel | f | Olympic Medalists | |
| Olesya Forsheva | f | Olympic Medalists | |
| Olga | f | Hurricanes and Tropical Storms | |
| Olga | f | Hurricanes and Tropical Storms | |
| Olga of Kiev | f | Russian Grand Dukes and Tsars, Saints | |
| Olga Barysheva-Korostelyova | f | Olympic Medalists | |
| Olga da Polga | f | Fictional Characters from Books | |
| Olga Fikotová | f | Olympic Medalists | |
| Olga Kirichenko | f | Olympic Medalists | |
| Olga Korbut | f | Notable Athletes, Olympic Medalists | |
| Olga Mineyeva | f | Olympic Medalists | |
| Olga Pataki | f | Fictional Characters from Television | |
| Olga Stulneva | f | Olympic Medalists | |
| Olga Sukharnova | f | Olympic Medalists | |
| Olga Vasyukova | f | Olympic Medalists | |
| Olga Vilukhina | f | Olympic Medalists | |
| Olga Yakovleva | f | Olympic Medalists | |
| Olga Yevkova | f | Olympic Medalists | |
| Olha Bryzhina | f | Olympic Medalists | |
| Olha Kharlan | f | Notable Athletes, Olympic Medalists | |
| Olimpiada Ivanova | f | Olympic Medalists | |
| Olive | f | Fictional Characters from Books | |
| Olive Kitteridge | f | Fictional Characters from Books | |
| Olive McKean | f | Olympic Medalists | |
| Olive Snook | f | Fictional Characters from Television | |
| Oliver | m | Fictional Characters from Movies | |
| Oliver | m | Fictional Characters from Song Titles | |
| Oliver Cromwell | m | English and British Kings and Queens, Notable Military Figures | |
| Oliver de Bois | m | Shakespearian Characters | |
| Oliver Hardy | m | Notable Actors and Entertainers | |
| Oliver Hart | m | Nobel Prize Winners | |
| Oliver La Farge | m | Pulitzer Award Winners | |
| Oliver Macdonald | m | Olympic Medalists | |
| Sir Oliver Martext | m | Shakespearian Characters | |
| Oliver Mlakar | m | Notable Actors and Entertainers | |
| Oliver Seibert | m | Hall-of-Famers | |
| Oliver Smithies | m | Nobel Prize Winners | |
| Oliver Stone | m | Notable Filmmakers, Oscar Award Winners | |
| Oliver Thredson | m | Fictional Characters from Television | |
| Oliver Twist | m | Fictional Characters from Books | |
| Oliver Tyler | m | Fictional Characters from Television | |
| Oliver Wells | m | Fictional Characters from Television | |
| Oliver E. Williamson | m | Nobel Prize Winners | |
| Oliver Wood | m | Harry Potter Characters | |
| Olivera Katarina | f | Notable Actors and Entertainers, Notable Musicians | |
| Olivia | f | Fictional Characters from Song Titles | |
| Olivia | f | Fictional Characters from Television | |
| Olivia | f | Fictional Characters from Plays and Musicals, Shakespearian Characters | |
| Olivia Colman | f | Emmy Award Winners, Notable Actors and Entertainers, Oscar Award Winners | |
| Olivia de Havilland | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Olivia Kendall | f | Fictional Characters from Television | |
| Olivia Newton-John | f | Grammy Award Winners, Notable Actors and Entertainers, Notable Musicians | |
| Olivia Rodrigo | f | Grammy Award Winners, Notable Musicians | |
| Olivia Williams | f | Notable Actors and Entertainers | |
| Olivier Castro-Staal | m | Fictional Characters from Television | |
| Olizone | f | Characters in Greek Mythology | |
| Olle Larsson | m | Olympic Medalists | |
| Ollie Matson | m | Hall-of-Famers, Olympic Medalists | |
| Ollom Fótla | m | Characters in Celtic Mythology, Irish Kings | |
| Olly Murs | m | Notable Musicians | |
| Olof Palme | m | Swedish Prime Ministers | |
| Olwen | f | Characters in Celtic Mythology | |
| Olympas | m | Biblical Characters, Saints | |
| Olympe Maxime | f | Harry Potter Characters | |
| Olympia Dukakis | f | Notable Actors and Entertainers, Oscar Award Winners | |
| Olympias | f | Saints | |
| Olympias | f | Other Royalty | |
| Olympusa | f | Characters in Greek Mythology | |
| Omar | m | Hurricanes and Tropical Storms | |
| Omar | m | Biblical Characters | |
| Omar Khayyám | m | Notable Philosophers and Thinkers, Notable Writers | |
| Omar Sharif | m | Notable Actors and Entertainers | |
| Omar Sívori | m | Notable Athletes | |
| Omelyan Kovch | m | Saints | |
| Omer Nishani | m | Albanian Presidents and Prime Ministers | |
| Omid Djalili | m | Notable Actors and Entertainers | |
| Omri | m | Biblical Characters | |
| Omri | m | Biblical Characters | |
| Omri | m | Biblical Characters | |
| Omri | m | Biblical Characters, Israelite and Judean Kings | |
| Omurtag | m | Bulgarian Kings and Tsars | |
| On | m | Biblical Characters | |
| Onam | m | Biblical Characters | |
| Onan | m | Biblical Characters | |
| Ondina Valla | f | Olympic Medalists | |
| Oneirus | m | Characters in Greek Mythology | |
| Onesimus | m | Biblical Characters, Saints | |
| Onesiphorus | m | Biblical Characters, Saints | |
| Onetor | m | Characters in Greek Mythology | |
| Onetor | m | Characters in Greek Mythology | |
| Onetor | m | Characters in Greek Mythology | |
| Onuphrius | m | Saints | |
| Opal | f | Hurricanes and Tropical Storms | |
| Ophelestes | m | Characters in Greek Mythology | |
| Ophelestes | m | Characters in Greek Mythology | |
| Ophelia | f | Hurricanes and Tropical Storms | |
| Ophelia | f | Hurricanes and Tropical Storms | |
| Ophelia | f | Hurricanes and Tropical Storms | |
| Ophelia | f | Hurricanes and Tropical Storms | |
| Ophelia | f | Fictional Characters from Plays and Musicals, Shakespearian Characters | |
| Ophion | m | Characters in Greek Mythology | |
| Ophion | m | Characters in Greek Mythology | |
| Ophir | m | Biblical Characters | |
| Ophites | m | Characters in Greek Mythology | |
| Ophrah | m | Biblical Characters | |
| Opie Taylor | m | Fictional Characters from Television | |
| Oprah Winfrey | f | Notable Actors and Entertainers, Notable Businesspeople | |
| Ops | f | Characters in Roman Mythology | |
| Optimus Prime | m | Fictional Characters from Movies, Fictional Characters from Television | |
| Ora Washington | f | Hall-of-Famers | |
| Orba | m | Characters in Celtic Mythology, Irish Kings | |
| Orchaldor | m | Tolkien's Characters | |
| Oreb | m | Biblical Characters | |
| Oren | m | Biblical Characters | |
| O. J. Simpson | m | Hall-of-Famers, Most Valuable Players, Notable Actors and Entertainers, Notable Athletes | |
| Oresitrophos | f | Characters in Greek Mythology | |
| Orestes | m | Characters in Greek Mythology | |
| Orhan | m | Ottoman Sultans | |
| Orhan Pamuk | m | Nobel Prize Winners, Notable Writers | |
| Oria | f | Characters in Greek Mythology | |
| Orias | f | Characters in Greek Mythology | |
| Orides | m | Characters in Greek Mythology | |
| Origen | m | Notable Philosophers and Thinkers | |
| Oriol Bohigas | m | Notable Artists | |
| Orion | m | Biblical Characters, Characters in Greek Mythology | |
| Orithyia | f | Characters in Greek Mythology | |
| Orithyia | f | Characters in Greek Mythology | |
| Orithyia | f | Characters in Greek Mythology | |
| Orlande de Lassus | m | Notable Musicians | |
| Orlando | m | Shakespearian Characters | |
| Orlando | m | Fictional Characters from Books | |
| Orlando Cepeda | m | Hall-of-Famers, Most Valuable Players, Notable Athletes | |
| Orlando Hernández | m | Olympic Medalists | |
| Orlando Pace | m | Hall-of-Famers | |
| Ornia | f | Characters in Greek Mythology | |
| Ornytion | m | Characters in Greek Mythology | |
| Orpheus | m | Characters in Greek Mythology | |
| Orphne | f | Characters in Greek Mythology | |
| Orry Main | m | Fictional Characters from Books, Fictional Characters from Television | |
| Orsedice | f | Characters in Greek Mythology | |
| Orseis | f | Characters in Greek Mythology | |
| Orsiboe | f | Characters in Greek Mythology | |
| Duke Orsino | m | Fictional Characters from Plays and Musicals, Shakespearian Characters | |
| Orsinome | f | Characters in Greek Mythology | |
| Orsobia | f | Characters in Greek Mythology | |
| Orson Welles | m | Notable Actors and Entertainers, Notable Filmmakers | |
| Orthaea | f | Characters in Greek Mythology | |
| Orthanes | m | Characters in Greek Mythology | |
| Orthaon | m | Characters in Greek Mythology | |
| Orthopolis | m | Characters in Greek Mythology | |
| Ortyx | m | Characters in Greek Mythology | |
| Orythaon | m | Characters in Greek Mythology | |
| Komei | m | Japanese Emperors | |
| Osamu Dazai | m | Notable Writers | |
| Osanna of Mantua | f | Saints | |
| Oscar | m | Hurricanes and Tropical Storms | |
| Oscar of Belgium | m | Other Royalty | |
| Óscar Arias | m | Nobel Prize Winners | |
| Oscar Bluth | m | Fictional Characters from Television | |
| Oscar Charleston | m | Hall-of-Famers | |
| Oscar Hijuelos | m | Notable Writers, Pulitzer Award Winners | |
| Oscar Macías | m | Olympic Medalists | |
| Oscar Moglia | m | Olympic Medalists | |
| Oscar Robertson | m | Hall-of-Famers, Most Valuable Players, Notable Athletes, Olympic Medalists | |
| Oscar Ruggeri | m | Notable Athletes | |
| Oscar Luigi Scalfaro | m | Italian Presidents and Prime Ministers | |
| Oscar Varona | m | Olympic Medalists | |
| O'Shea "Ice Cube" Jackson | m | Notable Actors and Entertainers, Notable Musicians, Rock and Roll Hall-of-Famers | |
| Osiris | m | Characters in Egyptian Mythology | |
| Oskari Mantere | m | Finnish Presidents and Prime Ministers | |
| Oskars Melbārdis | m | Olympic Medalists | |
| Osman I | m | Ottoman Sultans | |
| Osman II | m | Islamic Caliphs, Ottoman Sultans | |
| Osman III | m | Islamic Caliphs, Ottoman Sultans | |
| Osmani Urrutia | m | Olympic Medalists | |
| Osorkon I | m | Egyptian Pharaohs | |
| Osorkon II | m | Egyptian Pharaohs | |
| Osorkon III | m | Egyptian Pharaohs | |
| Osric | m | Shakespearian Characters | |
| Ossian Skiöld | m | Olympic Medalists | |
| Ossip Zadkine | m | Notable Artists | |
| Osvaldo Fernández | m | Olympic Medalists | |
| Oswald | m | Shakespearian Characters | |
| Oswald | m | Fictional Characters from Television | |
| Oswald Carver | m | Olympic Medalists | |
| Oszkár Abay-Nemes | m | Olympic Medalists | |
| Otaces | m | Characters in Greek Mythology | |
| Otar Korkia | m | Olympic Medalists | |
| Otar Patsatsia | m | Georgian Presidents and Prime Ministers | |
| Otaxes | m | Characters in Greek Mythology | |
| Othello | m | Fictional Characters from Plays and Musicals, Shakespearian Characters | |
| Othni | m | Biblical Characters | |
| Othniel | m | Biblical Characters | |
| Otho Sackville-Baggins | m | Tolkien's Characters | |
| Othris | f | Characters in Greek Mythology | |
| Otis Davis | m | Olympic Medalists | |
| Otis Redding | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Otrere | f | Characters in Greek Mythology | |
| Ottmar Hitzfeld | m | Notable Athletes | |
| Otto I the Great | m | German Kings and Holy Roman Emperors | |
| Otto II the Red | m | German Kings and Holy Roman Emperors | |
| Otto III | m | German Kings and Holy Roman Emperors | |
| Ottó III of Bavaria | m | Hungarian Kings and Queens | |
| Otto IV | m | German Kings and Holy Roman Emperors | |
| Otto of Bamberg | m | Saints | |
| Otto Diels | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Otto Flick | m | Fictional Characters from Television | |
| Otto Graham | m | Hall-of-Famers, Notable Athletes | |
| Otto Hahn | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Otto Neumann | m | Olympic Medalists | |
| Otto Rehhagel | m | Notable Athletes | |
| Otto Stern | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Otto Strandman | m | Estonian Presidents and Prime Ministers | |
| Otto Trieloff | m | Olympic Medalists | |
| Otto von Bismarck | m | German Chancellors and Presidents | |
| Otto Wallach | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Ottokar I | m | Bohemian Kings | |
| Ottokar II | m | Austrian Dukes and Emperors, Bohemian Kings | |
| Otus | m | Characters in Greek Mythology | |
| Otylia Jędrzejczak | f | Olympic Medalists | |
| Ove Andersen | m | Olympic Medalists | |
| Mistress Overdone | f | Shakespearian Characters | |
| Ovid | m | Notable Writers | |
| Owen Chamberlain | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Owen Farrell | m | Notable Athletes | |
| Owain Glyndŵr | m | Other Royalty, Shakespearian Characters | |
| Owen Meany | m | Fictional Characters from Books | |
| Owen Willans Richardson | m | Nobel Prize Winners, Notable Scientists and Inventors | |
| Oxyrrhoe | f | Characters in Greek Mythology | |
| Øystein I | m | Norwegian Kings and Queens | |
| Ozem | m | Biblical Characters | |
| Ozem | m | Biblical Characters | |
| Ozni | m | Biblical Characters | |
| Ozren Bonačić | m | Olympic Medalists | |
| Öztürk Serengil | m | Notable Actors and Entertainers | |
| Ozuna | m | Notable Musicians | |
| Ozzie Smith | m | Hall-of-Famers, Notable Athletes | |
| Ozzy Osbourne | m | Notable Musicians, Rock and Roll Hall-of-Famers | |
| Paarai | m | Biblical Characters | |
| Paavo Johansson | m | Olympic Medalists | |
| Paavo Lipponen | m | Finnish Presidents and Prime Ministers | |
| Paavo Lonkila | m | Olympic Medalists | |
| Paavo Nurmi | m | Notable Athletes, Olympic Medalists | |
| Paavo Yrjölä | m | Olympic Medalists | |
| Pablo | m | Hurricanes and Tropical Storms | |
| Pablo Montes | m | Olympic Medalists | |
| Pablo Neruda | m | Nobel Prize Winners, Notable Writers | |
| Pablo Picasso | m | Notable Artists | |
| Pachylus | m | Characters in Greek Mythology | |
| Pacifico of San Severino | m | Saints | |
| Paco Gento | m | Notable Athletes | |
| Pactobius of Sebaste | m | Saints | |
| Paddy Barnes | m | Olympic Medalists | |
| Paddy McNair | m | Notable Athletes | |
| Paddy Moran | m | Hall-of-Famers | |
| Padma Patil | f | Harry Potter Characters | |
| Padon | m | Biblical Characters | |
| Paeeon | m | Characters in Greek Mythology | |
| Paeon | m | Characters in Greek Mythology | |
| Paeon | m | Characters in Greek Mythology | |
| Paeon | m | Characters in Greek Mythology | |
| Pagan | m | Bulgarian Kings and Tsars | |
| Pagiel | m | Biblical Characters | |
| Pahath-Moab | m | Biblical Characters | |
| Paige Scavo | f | Fictional Characters from Television | |
| Päivi Meriluoto-Aaltonen | f | Olympic Medalists | |
| Pál Schmitt | m | Hungarian Presidents and Prime Ministers, Notable Athletes, Olympic Medalists | |
| Pál Simon | m | Olympic Medalists | |