The People Against O'Hara

Spencer Tracy

James P. Curtayne

Acting

Pat O'Brien

Det. Vincent Ricks

Acting

Diana Lynn

Virginia 'Ginny' Curtayne

Acting

John Hodiak

District Attorney Louis Barra

Acting

Eduardo Ciannelli

Sol 'Knuckles' Lanzetta

Acting

James Arness

John Fordman 'Johnny' O'Hara

Acting

Yvette Duguay

Mrs. Katrina Lanzetta

Acting

Jay C. Flippen

Sven Norson

Acting

William Campbell

Frank Korvac

Acting

Richard Anderson

Jeff Chapman

Acting

Arthur Shields

Mr. O'Hara

Acting

Louise Lorimer

Mrs. Peg O'Hara

Acting

Henry O'Neill

Judge Keating

Acting

Ann Doran

Betty Clark, Policewoman

Acting

Emile Meyer

Captain Tom Mulvaney

Acting

Regis Toomey

Fred Colton, Police Sound Man

Acting

Katherine Warren

Mrs. William Sheffield (as Katharine Warren)

Acting

Brooks Benedict

Gambler (uncredited)

Acting

Leonard Bremen

Harry (uncredited)

Acting

Charles Bronson

Angelo Korvac (uncredited)

Acting

Mae Clarke

Receptionist (uncredited)

Acting

Michael Tolan

Vincent Korvac (as Lawrence Tolan) (uncredited)

Acting

Peter Mamakos

James Korvac (uncredited)

Acting

Sailor Vincent

William Sheffield (uncredited)

Acting

Ned Glass

Preliminary Hearing Judge (uncredited)

Acting

Jack Kruschen

Uniformed Detective (uncredited)

Acting

William Schallert

Intern with Ambulance (uncredited)

Acting