Jada Pinkett Smith (Sonji)
Will Smith (Muhammad Ali)
Jamie Foxx (Drew "Bundini" Brown)
Jon Voight (Howard Cosell)
Mario Van Peebles (Malcolm X)
Ron Silver (Angelo Dundee)
Themba Gasa (Idi Amin)
Andrew P. Jones (Don Kings Aide)
Cimanga Kalambay (Additional Aide to Mobutu)
Nathaniel Malekane (Archie Moore)
James Gilbert (Sparring Partner in Africa)
Rufus Dorsey (Floyd Patterson)
Lee Cummings (Hunter Thompson)
Vincent Cook (Jimmy Ellis)
Edda Collier (Blond French reporter)
Jean Bikoi (Additional Aide to Mobutu)
Millard Arnold (Doc Broadus)
Marc Kulazite Mboli (Additional Aide to Mobutu)
Henrikennyo Mukenyi (Bula)
Mark Mulder (Reporter)
Brandon T. Jackson
Wei Yi Lu (Chinese Delegate)
Damien "Bolo" Wills (Ken Norton)
Guy Van Swearingen (Induction FBI man)
Morgana Van Peebles (Malcolm X's daughter)
Maya Van Peebles (Malcolm X's daughter)
LaDonna Tittle (Bundini's landlady)
Robert Sale (Jerry Quarry)
David Prudham (Madison Square Garden announcer)
Zaa Nkweta (Foreman Fight Announcer)
Wade Andrew Williams (Lieutenant Jerome Claridge)
Gailard Sartain (Gordon Davidson)
Kim Robillard (Jimmy Cannon)
David Haines (Rudy Clay/Rahaman Ali)
William Utay (The Doctor)
Brad Greenquist (Marlin Thomas)
David Hess
John Ortiz (Madison Square Garden reporter)
Marc Grapey (Bob Arum)
Maestro Harrell (Young Cassius Clay)
Doug Hale (Judge Ingraham)
Victoria Dillard (Betty Shabazz)
Michael Michele (Veronica)
Joe Morton (Chancy Eskridge)
Paul Rodriguez (Dr. Ferdie Pacheco)
Bruce McGill (Bradley)
Barry "Shabaka" Henley (Herbert Muhammad)
Giancarlo Esposito (Cassius Clay Sr.)
Lawrence Mason (Luis Sarria)
LeVar Burton (Martin Luther King Jr.)
Albert Hall (Elijah Muhammad)
David Cubitt (Robert Lipsyte)
Ted Levine (Joe Smiley)
Candy Ann Brown (Odessa)
David Elliott (Sam Cooke)
Shari Watson (Woman Singer)
Malick Bowens (Joseph Mobutu)
Michael Bentt (Sonny Liston)
James N. Toney (Joe Frazier)
Alfred Cole (Ernie Terrell)
Charles Shufford (George Foreman)
Jeffrey Wright (Howard Bingham)
Mykelti Williamson (Don King)
Nona Gaye (Belinda)