Mortimer Brewster

Cary Grant

Jonathan Brewster

Raymond Massey

Abby Brewster

Josephine Hull

Elaine Harper

Priscilla Lane

Theodore "Teddy Roosevelt" Brewster

John Alexander

Dr. Einstein

Peter Lorre

Officer Patrick "Pat" O'Hara

Jack Carson

Martha Brewster

Jean Adair

Aunt Abby Brewster

Josephine Hull

Mr. Witherspoon

Edward Everett Horton

Aunt Martha Brewster

Jean Adair

Lt. Rooney

James Gleason

Lt. Rooney

James Gleason

Reverend Harper

Grant Mitchell

Police Sgt. Brophy

Edward McNamara

Taxi Cab Driver

Garry Owen

Officer Saunders

John Ridgely

Judge Cullman

Vaughan Glaser

Dr. Gilchrist

Chester Clute

Reporter at Marriage License Office

Charles Lane

Mr. Gibbs (Prospective No. 13)

Edward McWade

Man in Phone Booth

Leo White

Man in Phone Booth (uncredited)

Leo White

Marriage License Clerk (uncredited)

Spencer Charters

Photographer at Marriage License Office (uncredited)

Hank Mann

Umpire (uncredited)

Lee Phelps

Director

Frank Capra