O
David Wright O'Brien
Fitz-James O'Brien
Kevin O'Donnell, Jr.
Nick O'Donohoe
Patrick O'Leary
Robert O'Riordan
Joyce Carol Oates
Andrew J. Offutt
Megan Lindholm
Ben Ohlander
Andy Oldfield
J. T. Oliver
Chad Oliver
Bob Olsen
Ted Olson
Jerry Oltion
Luis Ortiz
George Orwell
Kirsten Oulton
Fulton Oursler
Hugh Addison