Namesakes
Canadian Prime Ministers:
1 prime minister
Brian Mulroney 1984-1993 
Fictional Characters from Books:
1 hero
Albus Dumbledore (a.k.a. Brian) 1997 Harry Potter and the Philosopher's Stone
Fictional Characters from Movies:
1 character
Albus Dumbledore (a.k.a. Brian) 2001 Harry Potter and the Philosopher's Stone
Fictional Characters from Television:
7 characters
Patrick Lockhart (a.k.a. Brian) 1965 Days of Our Lives
Brian Cooper 1993 Dr. Quinn, Medicine Woman
Brian Griffin 1999 Family Guy
Brian Fuller 2000 Gilmore Girls
Brian Hastings 2001 24
Brad Bellick (a.k.a. Brian) 2005 Prison Break
Brian Darling 2007 Dirty Sexy Money
Hall-of-Famers:
2 football, 1 ice hockey
(ice hockey) Brian Leetch 2009
(football) Brian Dawkins 2018
(football) Brian Urlacher 2018
Harry Potter Characters:
1 character
Albus Dumbledore (a.k.a. Brian)
Irish Kings:
2 kings
King Brian Bórú 1002-1014
King Brian ua Néill 1258-1260
Irish Presidents and Prime Ministers:
1 prime minister
(prime minister) Brian Cowen 2008-2011
Most Valuable Players:
1 winner
Brian Sipe 1980 football
Nobel Prize Winners:
2 physics, 1 chemistry, 1 medicine
(medicine) Peter Medawar (a.k.a. Brian) 1960
(physics) Brian David Josephson 1973
(physics) Brian Schmidt 2011
(chemistry) Brian Kobilka 2012
Notable Actors and Entertainers:
17 actors, 1 actor/comedian
Brian Bedford 1935-2016
Brian Dennehy 1938-2020
Brian Cox 1946-
Brian Kerwin 1949-
Brian George 1952-
Brian Benben 1956-
Brian McNamara 1960-
James Purefoy (a.k.a. Brian) 1964-
Brian Posehn 1966-
Brian Krause 1969-
Brian Van Holt 1969-
Brian Bloom 1970-
Brian Austin Green 1973-
Brian J. White 1975-
Brian Klugman 1975-
Christopher "Ludacris" Bridges (a.k.a. Brian) 1977-
Brian Dietzen 1977-
Brian Gleeson 1987-
Notable Athletes:
3 football, 2 soccer, 1 cricket, 1 driving, 1 ice hockey
(ice hockey) Brian Leetch 1968-
(cricket) Brian Lara 1969-
(football) Brian Dawkins 1973-
(football) Brian Urlacher 1978-
(driving) Brian Vickers 1983-
(football) Brian Orakpo 1986-
(soccer) Darryl Lachman (a.k.a. Brian) 1989-
(soccer) Brian Brobbey 2002-
Notable Filmmakers:
2 directors
Brian De Palma 1940-
Brian Klugman 1975-
Notable Journalists:
1 news presenter
(news presenter) Brian Williams 1959-
Notable Musicians:
7 musicians, 4 singers
Jet Black (a.k.a. Brian) 1938-2022
Brian Jones 1942-1969
Brian Wilson 1942-
Brian May 1947-
Brian Johnson 1947-
Brian Eno 1948-
Marilyn Manson (a.k.a. Brian) 1969-
Brian "Head" Welch 1970-
Brian Littrell 1975-
Christopher "Ludacris" Bridges (a.k.a. Brian) 1977-
Brian McFadden 1980-
Notable Scientists and Inventors:
2 physicists
Brian David Josephson 1940-
Brian Schmidt 1967-
Olympic Medalists:
7 bronze, 2 gold, 1 gold/silver
(bronze) Brian Eric Phelps 1960 diving - platform
(bronze) Brian Job 1968 swimming - 200 m breaststroke
(bronze) Brian Brinkley 1976 swimming - 4x200 m freestyle relay
(gold) Brian Goodell 1976 swimming - 1500 m freestyle; swimming - 400 m freestyle
(bronze) Brian Diemer 1984 3000 m steeplechase
(bronze) Brian Loyd 1996 baseball
(gold) Brian M. Lewis 2000 4x100 m relay
(bronze) Brian Barden 2008 baseball
(bronze) Brian Duensing 2008 baseball
(gold/silver) Brian Price 2008; 2012 rowing
Rock and Roll Hall-of-Famers:
6 musicians
Brian Wilson 1988 The Beach Boys
Brian Jones 1989 The Rolling Stones
Brian May 2001 Queen
Brian Johnson 2003 AC/DC
Denny Laine (a.k.a. Brian) 2018 The Moody Blues
Brian Eno 2019 Roxy Music
Saints:
1 blessed
Blessed Brian Lacey ?-1591