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Merle Oberon

Gary Oldman

Annie Oakley

Aristotle Onassis

Donald O'Connor

Susan Olsen

Peter Ostrum

Marie Osmond

Clive Owen

Bernadette O'Farrell

Joe "King" Oliver

Margaret O'Brien

Randy Orton

Jennifer O'Neill

Ryan O'Neal

Maureen O'Sullivan

Warren Oates

Osmonds

Hugh O'Brian

Pat O'Brien

Dennis O'Keefe

Warner Oland

Carroll O'Connor

Tatum O'Neal

Edward James Olmos

Nancy Olson

Edmond O'Brien

Ian Ogilvy

Michael Ontkean

Chris O'Donnell

Heather O'Rourke

Sandra Day O'Connor

Jerry Orbach

Jack Oakie

Ole Olsen

Carol Ohmart

Julia Ormond

Jacques Offenbach

Randi Oakes

Maria Ouspenskaya

David O. Selznick

George O'Brien

Ashley Olsen

Mary-Kate Olsen

Susan Oliver

Tony Orlando