Landon Donovan
born 1982 American soccer player
Jeff Ayres
born 1987 American basketball player
Harold Smith
1909–1958 Diver
Richard Carrier
born 1969 American historian and philosopher
Prince Fielder
born 1984 American baseball player
Cle Kooiman
born 1963 American soccer player
Sol Ruca
born 1999 American professional wrestler
Anthony Muñoz
born 1958 American football player
Antonio Pierce
born 1978 American football player and coach
Hobart Alter
1933–2014 American businessman
Henry Bumstead
1915–2006 Art director
Leon Frierson
born 1986 American actor and comedian
Doug Northway
born 1955 American swimmer, Olympic bronze medalist, former world record-holder
Gilbert Espinosa Chávez
1932–2020 Auxiliary bishop of San Diego
Rod Barajas
born 1975 American baseball player and coach
Jack Toomay
1922–2008 American professional basketball player and Air Force major general
Joey Scarbury
born 1955 American singer and songwriter
Brian Allen
born 1980 Player of American football
Harold Hanson
born 1999 American soccer player
Khalil Dorsey
born 1998 American football player
Leon Bender
1975–1998 American football player
David Bañuelos
born 1996 Baseball player
George Bjorkman
born 1956 American baseball player
Julia Bingham
born 1998 American soccer player
Alvin White
born 1953 American gridiron football player
Devin Mahina
born 1989 American football player
Dick Welsh
1933–2023 College basketball player (1952–1955) Southern California
Joe Mathis
born 1995 American American football player
Scott Fields
born 1973 American football linebacker
Thomas A. Zlaket
born 1941 American judge
Brody Meyer
born 1989 American pornographic actor
Leandra Rose
born 1994 Mexican-American drag performer
Russell H. Waines
1927–2009 Botanist
Tati McQuay
born 2003 American actress
Thomas Craig
1907–1969 American artist
Also called Ontario home
TY Tina Yothers
born 1973 Actress, singer
Daniel Durston
born 1987 American reality television participant
Erik Cardona
born 1981 American reality television participant
Donald L. Glusker
?–2000 American chemist and archaeologist
Jane R. Mercer
Sociologist