Karen O

Patrick O'Brian

Austin O'Brien

Bill O'Brien

Conan O'Brien

Conor Cruise O'Brien

Dan O'Brien

Dylan O'Brien

Ed O'Brien

Edna O'Brien

Flann O'Brien

Kate O'Brien

Keith O'Brien

Margaret O'Brien

Michael O'Brien

Mike O'Brien

Richard O'Brien

Soledad O'Brien

Tim O'Brien

Brian F. O'Byrne

Brendan O'Carroll

Sean O'Casey

Aaron D. O'Connell

Daniel O'Connell

Jack O'Connell

Jerry O'Connell

William H. O'Connell

Carroll O'Connor

Donald O'Connor

Erin O'Connor

Flannery O'Connor

Frances O'Connor

Gavin O'Connor

Renee O'Connor

Sandra Day O'Connor

Sinead O'Connor

Varley O'Connor

Aubrey O'Day

Nancy O'Dell

Chris O'Donnell

Christine O'Donnell

Gus O'Donnell

Mark O'Donnell

Norah O'Donnell

Rosie O'Donnell

Colin O'Donoghue

Michael O'Donoghue

John O'Donohue

Chris O'Dowd

Brian O'Driscoll

Sean O'Faolain

Dean O'Gorman

Frances O'Grady

Gail O'Grady

Paul O'Grady

Andrew O'Hagan

Madalyn Murray O'Hair

Catherine O'Hara

Frank O'Hara

John O'Hara

Kelli O'Hara

Maureen O'Hara

Paige O'Hara

Denis O'Hare

Lisa O'Hare

Jim O'Heir

John O'Hurley

Jodi Lyn O'Keefe

Georgia O'Keeffe

Jean O'Leary

Kevin O'Leary

Alex O'Loughlin

Austin O'Malley

Bryan Lee O'Malley

Martin O'Malley

Mike O'Malley

Jason O'Mara

Kate O'Mara

Stewart O'Nan

Alexander O'Neal

Patrice O'Neal

Ryan O'Neal

Shaquille O'Neal

Tatum O'Neal

Nance O'Neil

Ed O'Neill

Eugene O'Neill

Heather O'Neill

Jennifer O'Neill

John O'Neill

Joseph O'Neill

Paul O'Neill

Thomas P. O'Neill

William O'Neill

Terry O'Quinn

Bill O'Reilly

Heather O'Reilly

John Boyle O'Reilly

Tim O'Reilly

Beto O'Rourke

Heather O'Rourke

Meghan O'Rourke

P. J. O'Rourke

Maureen O'Sullivan

Ronnie O'Sullivan

Annette O'Toole

John O'Toole

Peter O'Toole

Paul Oakenfold

Ann Oakley

Adam Oates

John Oates

Joyce Carol Oates

Sharmeen Obaid-Chinoy

Barack Obama

Michelle Obama

Olusegun Obasanjo

Agnes Obel

Eddie Obeng

Douglas R. Oberhelman

Conor Oberst

Hermann Oberth

Jim Oberweis

Dave Obey

Andres Manuel Lopez Obrador

Jacqueline Obradors

Tea Obreht

Lynda Obst

Ric Ocasek

William of Occam

Billy Ocean

Frank Ocean

Ellen Ochoa

Severo Ochoa

Phil Ochs

Tom Odell

Bob Odenkirk

Clifford Odets

Raymond T. Odierno

Steve Odland

Hortense Odlum

William Odom

Toyin Odutola

Adepero Oduye

Kenzaburo Oe

Roger von Oech

Albert Oehlen

Alexander Dale Oen

Al Oerter

Nick Offerman

Jenny Offill

Chris Ofili

David Ogilvy

Sadaharu Oh

Sandra Oh

Alexis Ohanian

Apolo Ohno

Masi Oka

Dayo Okeniyi

Sophie Okonedo

Ngozi Okonjo-Iweala

Daniel Okrent

Ben Okri

Victor Oladipo
Toks Olagundoye
George Andrew Olah
Hakeem Olajuwon
Marvin Olasky
Lubna Olayan
Keith Olbermann
Claes Oldenburg
Bruce Oldfield
Mike Oldfield
John Oldham
Will Oldham
Gary Oldman
Sharon Olds
Larisa Oleynik
Lena Olin
Margaret Oliphant
Mark Oliphant
Pat Oliphant
Tony Oliva
Andrew Oliver
Barney Oliver
Barret Oliver
Frederick Scott Oliver
Gene Oliver
James Oliver
Jamie Oliver
John Oliver
Lauren Oliver
Mary Oliver
Peter Oliver
Susan Oliver
Laurence Olivier
Dawn Olivieri
Tony Oller
Ehud Olmert
Edward James Olmos

Frederick Law
Angel Olsen
Ashley Olsen
Elizabeth Olsen
Eric Christian Olsen
Ken Olsen
Mary-Kate Olsen
Merlin Olsen
Susan Olsen
Tillie Olsen
S. Jay Olshansky
Barbara Olson
Candice Olson
Carl Olson
Charles Olson
Johnny Olson
Kaitlin Olson
Ted Olson
Ty Olsson
Renee Olstead
John Olver
Kelly Olynyk
Timothy Olyphant
Mohammed Omar
Pierre Omidyar
Timothy Omundson
Aristotle Onassis
Michael Ondaatje
Michel Onfray
Jerry Only
Yoko Ono
Lupe Ontiveros
Louis Oosthuizen
Marcel Ophuls
Catherine Opie
Niels Arden Oplev
Kenneth Oppel
George Oppen
Harry Oppenheimer
J. Robert Oppenheimer
Jerry Oppenheimer
Rita Ora
Jerry Orbach
Susie Orbach
Robert Orben
Roy Orbison
Roberto Orci
Emma Orczy
Melissa Ordway
Michael Oren
Carl Orff
Origen
Tony Orlando
Susan Orlean
Suze Orman
Eugene Ormandy
Julia Ormond
Dean Ornish
Leo Ornstein
Norman Ornstein
Jose C. Orozco
Benjamin Orr
Bobby Orr
John Boyd Orr
Leonard Orr
Stacie Orrico
Leland Orser
Peter Orszag
John Ortberg
Daniel Ortega
Lindi Ortega
Zak Orth
Ana Ortiz
David Ortiz
Solomon Ortiz
Victor Ortiz
Beth Orton
Joe Orton
George Orwell
Meghan Ory
Adam Osborne
Buzz Osborne
George Osborne
Jeffrey Osborne
John Osborne
Robert Osborne
Tom Osborne
Jack Osbourne
Kelly Osbourne
Ozzy Osbourne
Sharon Osbourne
Doug Ose
Guy Oseary
Charles Osgood
William Osler
Emily Osment
Haley Joel Osment
Donny Osmond
Marie Osmond
Laura Osnes
Alfonso A. Ossorio
Joel Osteen
Victoria Osteen
Emily Oster
Cat Osterman
Alexander Osterwalder
Jeremiah P. Ostriker
Marc Ostrofsky
Elinor Ostrom
Meredith Ostrom
Adam Ostrow
Wilhelm Ostwald
Alice Oswald
Lee Harvey Oswald
Marina Oswald
Patton Oswalt
Cheri Oteri
Carre Otis
James Otis
Johnny Otis
Mel Ott
Butch Otter
Jim Otto
John Otto
Miranda Otto
Rudolf Otto
Yotam Ottolenghi
David Otunga
John Otway
Thomas Otway
Ouida
Fulton Oursler
Denise Van Outen
Ida Rentoul Outhwaite
Julian Ovenden
Thomas Overbury
Chord Overstreet
Kelly Overton
Ovid
Michael Ovitz
Bill Owen
Chris Owen
Clive Owen
Jake Owen
John Owen
Michael Owen
Randy Owen
Richard Owen
Robert Dale Owen
Robert Owen
Wilfred Owen
Bill Owens
Buck Owens
Gary Owens
Jesse Owens
Major Owens
Terrell Owens
Michael Oxley
David Oyelowo
Helen Oyeyemi
Amos Oz
Daphne Oz
Frank Oz
Mehmet Oz
Ruth Ozeki
Cynthia Ozick
Mesut Ozil