James Cagney
as Police Commissioner Rhinelander Waldo
Norman Mailer
as Stanford White
Frankie Faison
as Gang Member 1
Mandy Patinkin
as Tateh
Robert Joy
as Henry "Harry" Kendall Thaw
Kenneth McMillan
as Willie Conklin
Donald O'Connor
as Evelyn's Dance Instructor
Debbie Allen
as Sarah
Pat O'Brien
as Mr. Delphin Delmas
Howard Rollins Jr.
as Coalhouse Walker Jr.
James Olson
as Father
Jeff Demunn
as Harry Houdini
Bruce Boa
as Jerome