Kingsley Ben-Adir as Malcolm X

Eli Goree as Cassius Clay

Aldis Hodge as Jim Brown

Leslie Odom Jr. as Sam Cooke

Joaquina Kalukango as Betty X

Nicolette Robinson as Barbara Cooke

Michael Imperioli as Angelo Dundee

Lawrence Gilliard Jr. as Bundini Brown

Christian Magby as Jamaal

Jeremy Pope as Jackie Wilson

Christopher Gorham as Johnny Carson

Beau Bridges as Mr. Carlton

Lance Reddick as Brother Kareem

Derek Roberts as Jerome X

Emily Bridges as Emily Carlton

Amondre D. Jackson as L.C. Cooke

Jerome A. Wilson as Elijah Muhammad

Hunter Burke as Jess Rand

Robert Stevens Wayne as Jules Podell

Randall Newsome as Myron Cohen

Matt Fowler as Ronnie

Chris Game as Ferdie Pacheco

Alan Wells as Ed McMahon

Dustin Lewis as Miami Announcer

John Curran as Wembley Announcer #1

Mark Allan Stewart as Wembley Announcer #2

Amar Khalil as Bobby

Ian Alexander Desdune II as Michael

Jeremy Anderson as Lamont 3X

Pierce Lackey as Reporter 1

Dave Pileggi as Reporter 2

Ashley LeConte Campbell as Karen

Kimberly B Brown as Geraldine Liston

Nola Epps as Attallah Shabazz

Kipori Woods as Cliff White

Joshua Nylan Tanner as Boston Ballroom Announcer

Sean Monaghan as Henry 'The Hammer' Cooper

Aaron D. Alexander as Sonny Liston

Jason Ament as Miami Referee

Nathan Siebring as Wembley Referee

Kevin Reid as Cameraman

Cody Johnson as Tristen

Rachael Knaps as Boxing Match Attendee (uncredited)