Barry O

Jerry O

Scotty O

Steve O

Edward Athol Oakley

Jerry Oates

Ted Oates

Buddy O'Brien

Danny O'Brien

Jack O'Brien

Victor Ochoa

Pat O'Connor

Larry O'Day

Homer O'Dell

Ray Odyssey

Naoya Ogawa

Yoshinari Ogawa

Sean O’Haire

Michiyoshi Ohara

Kintaro Ohki

Shinjiro Ohtani

Takashi Okano

Gene Okerlund

Mean Gene Okerlund

Oklahoma

Motoshi Okuma

Shigeo Okumura

Phil Olafson

Rip Oliver

Sexy Oliver

Milt Olsen

Neal "Swede" Olson

Mr Olympia

Mr Olympia (#3)

Danno O'Mahoney

Takao Omori

Marty O'Neill

One Man Gang

Atsushi Onita

Jerry Only

Sonny Onoo

Onyx

Kristy Order (w)

Franz Orlik

Paul Orndorff

Oro

Jess Ortega

Bob Orton

Randy Orton

Glen Osbourne

Oscar

Danno O'Shocker

Jerry Oske

Jerry Oski

avid Oswald

Alexander Otsuka

Pierre-Carl Ouellet

Karl Ouellette

Pierre Ouelette

The Overweight Lover

Elton Owen

Herb Owen

Hisakatsu Oya

Oz

Mayumi Ozaki(w)