Harry Carey Jr.
as Sims
Marilyn Monroe
as Lorelei Lee
George Davis
as Cab Driver Pierre
Charles Coburn
as Sir Francis "Piggy" Beekman
Taylor Holmes
as Mr. Esmond Sr.
Robert Foulk
as Passport Official
Steven Geray
as Hotel Manager
Marcel Dalio
as Magistrate
Norma Varden
as Lady Beekman
Henri Letondal
as Grotier, the Prosecutor
Alex Frazer
as Pritchard
Jane Russell
as Dorothy Shaw
Elliott Reid
as Ernie Malone
Tommy Noonan
as Gus Esmond
George Winslow
as Henry Spofford III
Howard Wendell
as Watson
Alphonse Martell
as Headwaiter at Chez Louis
Robert Nichols
as Evans
Charles Tannen
as Malone's Contact Man at Wharf
Harry Seymour
as Louie, Captain of Waiters (uncredited)