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Adam OatesWarren OatesBarack Obama
Dan O'BannonMerle OberonJames L. Oberstar
David R. ObeyArch ObolerHugh O'Brian
George O'BrienPat O'BrienRichard O'Brien
Tina O'BrienMatthew O'CallaghanJack O'Connell
Jerry O'ConnellJim O'ConnollyCarroll O'Connor
Donald O'ConnorFrances O'ConnorGavin O'Connor
Kevin J. O'ConnorPat O'ConnorSandra Day O'Connor
Sinead O'ConnorLamar OdomChris O'Donnell
Damien O'DonnellRosie O'DonnellBecky O'Donohue
Steve OedekerkPeter O'FallonJacques Offenbach
Susanne OfteringerGail O'GradyLani O'Grady
Brian O'HalloranCatherine O'HaraMaureen O'Hara
Tommy O'HaverTomo OhkaEmeka Okafor
Takao OkawaraJodi Lyn O'KeefeMichael O'Keefe
Hakeem OlajuwonWarner OlandFredrik Olausson
Gary OldmanJohn OlerudJoel Oliansky
Lena OlinTony OlivaJason Olive
Jamie OliverLaurence OlivierPhilip Olivier
Dan OllmanEdward James OlmosMichael Olowokandi
Ashley OlsenMary-Kate OlsenMerlin Olsen
Susan OlsenJohn OlverKate O'Mara
Jo O'MearaJacqueline Kennedy OnassisXenia Onatopp
Jermaine O'NealRon O'NealRyan O'Neal
Shaquille O'NealTatum O'NealCharlie O'Neale
Buck O'NeilMartin O'NeilEd O'Neill
Jennifer O'NeillPaul O'NeillEllison Onizuka
Yoko OnoMichael OntkeanJerry Orbach
Magglio OrdonezRey OrdonezTerry O'Reilly
Lester OrlebeckJulia OrmondHeather O'Rourke
James OrrKenny OrtegaDavid Ortiz
Russ OrtizSolomon P. OrtizRandy Orton
George OrwellHolmes OsborneMadolyn Smith Osborne
Jack OsbourneKelly OsbourneOzzy Osbourne
Sharon OsbourneJohn O'SheaMamoru Oshii
Nagisa OshimaHaley Joel OsmentMarie Osmond
Peter OstrumMaureen O'SullivanThaddeus O'Sullivan
Roy OswaltCarre OtisKatsuhiro Otomo
Annette O'ToolePeter O'ToolePlenty O'Toole
Mel OttJim OttoMiranda Otto
Phina OurcheAlexander OvechkinLyle Overbay
Beverley OwenClive OwenMichael Owen
Terrell OwensCatherine OxenbergFrank Oz
Shigehiro OzawaFrancois Ozon