James Stewart
Shep Henderson

Kim Novak
Gillian Holroyd

Jack Lemmon
Nicky Holroyd

Ernie Kovacs
Sidney Redlitch

Hermione Gingold
Bianca de Passe

Elsa Lanchester
Aunt Queenie Holroyd

Janice Rule
Merle Kittridge

Philippe Clay
French Singer at the Zodiac Club

Bek Nelson
Tina

Howard McNear
Andy White

Fred Aldrich
Mover (uncredited)

Wolfe Barzell
Zodiac Club Proprietor (uncredited)

Gail Bonney
Betty - Merle's Maid (uncredited)

Don Brodie
Cab Driver (uncredited)

James Lanphier
Waldo (uncredited)