(in alphabetical order)
(in credits order)
- Henry Cooper(as Sir Henry Cooper)
Rest of cast listed alphabetically
- Muhammad Ali(archive footage)
- Joe Louis(archive footage)
- Malcolm X(archive footage)
- Elijah Muhammad(archive footage)
- Rahman Ali(archive footage) (uncredited)
- Woody Allen(archive footage) (uncredited)
- Drew Bundini Brown(archive footage) (uncredited)
- Howard Cosell(archive footage) (uncredited)
- Angelo Dundee(archive footage) (uncredited)
- Diane Keaton(archive footage) (uncredited)
- Martin Luther King(archive footage) (uncredited)
- Sonny Liston(archive footage) (uncredited)
- Richard Nixon(archive footage) (uncredited)
- Michael Parkinson(archive footage) (uncredited)
- Frank Sinatra(archive footage) (uncredited)
- Michael Spinks(archive footage) (uncredited)
