Leon Errol

Knobby Walsh

Joe Kirkwood Jr.

Joe Palooka

Elyse Knox

Anne Howe

Eduardo Ciannelli

Florini

Joe Sawyer

Lefty

Elisha Cook Jr.

Eugene

Warren Hymer

Ira Eyler

Robert Kent

Ronnie Brewster

Sarah Padden

Mom Palooka

Joe Louis

Himself

Sam McDaniel

Smoky

J. Farrell MacDonald

Long-Count Bowman

Betty Blythe

Mrs. Stafford

Carol Hughes

Mrs. Van Pragg

Eddie Gribbon

Louie, the Louisiana Lion

Reginald Le Borg