Brian Donlevy as Stefan Dubechek aka Steve Dangos

Ann Richards as Anna O'Rourke Dangos

Walter Abel as Howard Clinton

John Qualen as Anton Dubechek

Stephen McNally as Teddy Roosevelt Dangos / Narrator

Mary McLeod as Katina 'Tina' Dangos

Bob Lowell as George Washington Dangos

Erville Alderson as Olson - Detroit Auto Works Technician (uncredited)

Fred Aldrich as Assembly Line Worker (uncredited)

Axel Anderson as Immigrant (uncredited)

Charles Bates as Teddy Roosevelt Dangos - Age 8 (uncredited)

Byron Foulger as High School Principal (uncredited)

Noreen Nash as Vaudeville act (uncredited)

Sue Moore as Minor Role (uncredited)