This is a list of names in which the gender is unisex; and the first letter is O.
Oakley m & f EnglishFrom an English surname that was from various place names meaning
"oak clearing" in Old English. A famous bearer of the surname was the American sharpshooter Annie Oakley (1860-1926).
Obi m & f IgboMeans
"heart" in Igbo.
Ocean f & m English (Modern)Simply from the English word
ocean for a large body of water. It is ultimately derived from Greek
Ὠκεανός (Okeanos), the name of the body of water thought to surround the Earth.
Odalis f & m Spanish (Latin American)Possibly an elaboration of
Odilia used in Latin America. In most countries it is a feminine name, but in the Dominican Republic it is commonly masculine.
Odell m & f EnglishFrom an English surname that was originally from a place name, itself derived from Old English
wad "woad" (a plant that produces a blue dye) and
hyll "hill".
Ofra m & f HebrewModern Hebrew form of
Ophrah. Originally it was a masculine name, but it is now used for females too.
Okuhle f & m Zulu, XhosaMeans
"that which is beautiful, that which is good" in Zulu and Xhosa.
Ola 3 m & f YorubaFrom Yoruba
ọlà meaning
"wealth" or the related
ọlá meaning
"honour, respect". It is also a short form of names containing those elements.
Omega m & f VariousFrom the name of the last letter in the Greek alphabet,
Ω. It is often seen as a symbol of completion.
Omer m & f HebrewMeans
"sheaf of wheat" in Hebrew.
Onyx m & f EnglishFrom the English word for the gemstone (a variety of chalcedony), which can be black, red or other colours. It is derived from Greek
ὄνυξ (onyx) meaning "claw, nail".
Opeyemi f & m YorubaMeans
"gratitude is suitable for me" in Yoruba.
Ophir m & f Biblical, HebrewFrom Hebrew
אוֹפִיר ('Ofir), meaning unknown. This is the name of a son of
Joktan in the Old Testament (where it is also used as a place name).
Ora 1 f & m EnglishPerhaps based on Latin
oro "to pray". It was first used in America in the 19th century.