Namesakes
Sinéad O'Connor
(f) 1966-2023 
Notable Musicians
Ella "Lorde" Yelich-O'Connor
(f) 1996-
Grammy Award Winners 2014 Royals (song of the year)
Notable Musicians
Sandra Day O'Connor
(f) 1930-2023
Notable Philosophers and Thinkers
Donald O'Connor
(m) 1925-2003
Emmy Award Winners 1954 Colgate Comedy Hour (actor)
Notable Actors and Entertainers (actor)
Carroll O'Connor
(m) 1924-2001
Emmy Award Winners 1972; 1977; 1978; 1979; 1989 All in the Family; In the Heat of the Night (actor)
Notable Actors and Entertainers (actor)
Una O'Connor
(f) 1880-1959
Notable Actors and Entertainers (actor)
Frances O'Connor
(f) 1967-
Notable Actors and Entertainers (actor)
Josh O'Connor
(m) 1990-
Emmy Award Winners 2021 The Crown (actor)
Notable Actors and Entertainers (actor)
Edwin O'Connor
(m) 1918-1968
Pulitzer Award Winners 1962 The Edge of Sadness
Wally O'Connor
(m) 1903-1950
Olympic Medalists 1924; 1932 swimming - 4x200 m freestyle relay; water polo (gold/bronze)
Cián O'Connor
(m) 1979-
Olympic Medalists 2012 equestrian (bronze)
Herbert "Buddy" O'Connor
(m) 1916-1977
Hall-of-Famers 1988 (ice hockey)
Most Valuable Players 1948 ice hockey
Notable Athletes (ice hockey)
Mary Anne O'Connor
(f) 1953-
Olympic Medalists 1976 basketball (silver)
Ruth Fisher
(a.k.a. O'Connor) (f)
Fictional Characters from Television 2001 Six Feet Under
Sarah O'Connor
(f)
Fictional Characters from Television 2001 Six Feet Under
Erin O'Connor
(f)
Fictional Characters from Song Titles 2008 Erin O'Connor