List of athletes in movies

Muhammad Ali (The Greatest (as himself),Freedom Road, The Rumble in the Jungle, When We Were Kings)
Mark Breland (The Boys Behind the Desk, He Got Game, Hell's Kitchen, La Bomba, The Lords of Discipline, Summer of Sam)
Vito Antuofermo (The Godfather 3, Goodfellas, Loser, The Mouse, New York Cop)
Alexis Arguello (Cat Chaser, Fists of Steel)
Cantinflas
Primo Carnera (Casanova's Big Night, Hercules and the Queen of Sheba, A Kid for Two Farthings, Mighty Joe Young, Prince Valiant)
George Foreman (When We Were Kings)
Marvin Hagler (Cyberflic, Indio)
Bob Hope
Vladimir Klitschko (Ocean's Eleven)
Jake LaMotta (Blue Vengeance, Confessions of a Psycho Cat, Ex-Americans, House in Naples, The Hustler, Firepower, Raging Bull (as himself), Hangmen, Maniac Cop, Mob War, Rebellion in Cuba, Who Killed Mary What's 'Er Name?)
Lennox Lewis (Ocean's Eleven, Shottas)
Ray 'Boom Boom' Mancini (Aces: Iron Eagle III, Amazing Stories: Book Three, Backstreet Dreams, Body and Soul, Bullet, Deadly Bet, The Dirty Dozen: The Fatal Mission, The Girl Gets Moe, The Mouse, Mutants in Paradise, Oceans of Fire, Opposite Corners, The Search for One-eye Jimmy, Timebomb, Turn of Faith, Wishful Thinking)
Carlos Monzón (Amigos para la aventura, Il Conto è chiuso, Los Hijos de López, Un Loco en acción, Las Locuras del profesor, El Macho, La Mary, Soñar, soñar)
Tommy Morrison (Rocky V)
Ken Norton (Delta Pi, Dirty Work, Drum, Frog and Wombat, Kiss and Be Killed, Mandingo, Oceans of Fire, Top of the Heap)
Ossie Ocasio
Ruben Olivares (Las Glorias del gran Púas, Llanto, risas y nocaut, Ni Chana, ni Juana, Nosotros los feos, Nosotros los pelados, La Pulquería, La Pulquería ataca de nuevo, Se sufre pero se goza, El Secuestro de los cien millones)
Jorge Páez (Dirty Money, Pelo suelto, Zapatos viejos)
Carlos Palomino (Criminal Hearts, Dance of the Dwarfs, Death Match, Detonator, Die Watching, Fists of Steel, Geronimo: An American Legend, If... Dog... Rabbit, It's Alive III: Island of the Alive, Legal Tender, My Samurai, Nasty Hero, One Clean Move, Price of Glory, Rampage, Silent Night, Deadly Night 3: Better Watch Out!, Strangers Kiss, Timebomb)
Salvador Sanchez (The Last Fight) (Note on Salvador Sanchez: There is another Salvador Sanchez, one who is a very famous actor in Mexico and was not the boxer.)
Michael Spinks (Speed Zone!, Cannonball Run 2)
Gene Tunney (Fighting Marine)

American football players

Brian Bosworth (Stone Cold, One Tough Bastard, Spill, Blackout, Back in Business, Three Kings, The Operative, Phase IV, Mach 2, The Longest Yard)
Jim Brown (The Dirty Dozen, Ice Station Zebra, The Running Man, I'm Gonna Git You Sucka, Original Gangstas, Mars Attacks!, He Got Game, Any Given Sunday, many others)
Brett Favre (There's Something About Mary)
Alex Karras (Blazing Saddles, Porky's, Paper Lion)
Dan Marino (Ace Ventura: Pet Detective)
John Matuszak (Caveman)
Joe Namath (Avalanche Express, C.C. and Company, Chattanooga Choo Choo, Going Under, Green Visionary, The Last Rebel, Norwood)
Ray Nitschke (The Longest Yard)
OJ Simpson (Back to the Beach, Capricorn One, The Cassandra Crossing, CIA Code Name: Alexa, Firepower, Hambone and Hillie, Killer Force, The Klansman, The Naked Gun trilogy, No Place to Hide, Roots, The Towering Inferno, Why)
Bubba Smith (the Police Academy series)
Lawrence Taylor (The Waterboy, Any Given Sunday)
Carl Weathers (Rocky, Rocky II, Rocky III, Rocky IV, Predator, Action Jackson)

Ice hockey players

Paul Kariya in D3: The Mighty Ducks
Wayne Gretzky in D2: The Mighty Ducks
Marty McSorley (Bad Boys, Forget Paris, Con Air, Do Me a Favor)
Mike Modano in (The Mighty Ducks)
Cam Neely (Dumb and Dumber, Me, Myself, and Irene, What's the Worst That Could Happen?)
Brendan Shanahan (Forrest Gump, Me, Myself, and Irene)
Basil McRae (The Mighty Ducks)

Martial artists

Rugby Union players

Soccer players

Eric Cantona (Le Bonheur est dans le Pré, Elizabeth, Les Enfants du marais, La Grande vie!, Mookie, L'Outremangeur)
Vinnie Jones (The Big Bounce, Blast!, The Filthy War, Gone in Sixty Seconds, Lock, Stock and Two Smoking Barrels, Mean Machine, Night at the Golden Eagle, Poolhall Prophets, Rebel Yell, Red Light Runners, Snatch, Swordfish, Tooth)
Pelé (Escape from Victory)