David Niven
Henry, Doctor, Lee, Tony Stewart, Deacon, Ted, Frank, Steve Carlyle / Roger Carlyle, Uncle Fred, Adams, George, Charles, John, Hal Winters, Ted Parker, Andy, Wyeth, Phil Weston, Bingham, Richard Lilliam, David, William Langford, Royal Thurston, Cookie, Maxwell, Doctor Gentry, Mitch, Larkin, Andy Fields, Jim Kenyon, Robert Louis Stevenson, Philip
Dick Powell
Andrew, Chris, Mike Donegan, Graham, Jeff, Fred, Paul, Eddie White, Dave Robinson, Burt Stroude, Priest, US Marshal Philip Dana, Grover Doane, Capt. Avery, Dan, Steve, Philip Benton, Dave, Fleet Mason, Dan Hodges, Eddie, Dan Matson, Will Sonnett, Willie Dante
Ida Lupino
Grace, Flo Watson, Kit, Ann, Sheila, Sarah, Emma, Ginny, Valerie, Billie, Meg, Emily Cameron, Anna, Ellen, Diana, Celia Coberly, Nina Barton, Evelyn
Herb Vigran
Monte - Bartender, Bartender, Marc, Monty Leeds, 3rd Reporter, Monte, Lt. Richards, Sam Rawlings
Charles Boyer
Alan, Jacques, Mr. Graham, Eric, Dr. Severson, Grisby, Frank Hepp, Carl, Renneck, Major Tinnente, Dr. Dumont, Carl Baxter, Claude Le Beau, Sampan Joe, George, Alan Abbey, The Man, Robert, Martin, Paul, Roger, Captain, John, Dr. Giboux, Montaigne, Andre, Henri
Ray Walker
Sgt. Phillips, Tom Barry, Steward, Sam, Police Lieutenant, Director, Policeman, Reporter
Regis Toomey
Police Lt. Manny Waldo, Lt. Manny Waldo, Colonel
Richard Hale
Pop, Bishop, Dr. Kessell, Judge, Capt. Harmon, Fotheringham
Ralph Moody
Doc, Jarvis Miller, Uncle Lee, Stranger, Conductor, Moreland, Realtor
Robert Bice
Al Newsome, Lucenec, Doorman, Boatman, Chaplain, Matt Devlin, Carpenter
Rhys Williams
Stage Manager, Raikes, Sidney, Watchman, Mr. Peck, Bum
William Forrest
Sam Rogers, Judge, Mr. Colter, Charlie, Wilke
Christopher Dark
Major Evans, Craig, John Hudson, Ryan Sanford, Tamar, Pete
John Harmon
Sparks, Joseph, Sailor, Joe, Coons
Walter Sande
Police Lt. Richy, Graysuit, Peterson, Johnny Boss, First Mate
Hugh Beaumont
Albert Woods, Doctor, Padre, Father Renaldo, Dr. Lindell
Richard Reeves
Security Guard (uncredited), Lappeppa, Stevedore, Jack, Truck Driver
John Doucette
Charon, Bartender, Sgt. Wood, Sgt. Katrel, Moretti
Alan Mowbray
Jackson - Waiter, Albert, Jackson
Ronald Colman
Dr. Bosanquent, Cameron, Caller, Narrator
Jay Novello
Hutchinson, Fredrico, Clerk, Bookkeeper
Joan Camden
Susan Warren, Mrs. Mitchell, Doris Hepburn, Sally
William F. Leicester
Hi, Steve Caspery, Donny, Second Mate
Nestor Paiva
Mr. Davis, Rocco, Mario, Judge Le Beau
Dorothy Green
Stella Hodges, Laura, Ellen, First Woman
Walter Kingsford
Armstrong, Cary Howard, Sir Charles, Dr. Blake
Barbara Lawrence
Kathi, Claire, Eva Kenyon, Marjorie
Joseph Waring
Hutchinson, Donny, Mario, Stevens
Lewis Martin
Dr. Forbes, Mr. Macready, Mr. Grinell, Reeves
Don Shelton
Alec, Sullivan, Woodward, Florist
Walter Coy
Steiner, Verne Miller, Joe, Don Gavin
Alexander Campbell
Prof. Tennant, Governor, Warden, Dr. Bradford
Beverly Garland
Maxine, Lucille, Holly, Julie
Alex Frazer
Mr. Tarmigan, Scotsman, Conductor
Berry Kroeger
Gen. Feng, Nick, Detmar, Walter Pomeroy
Sam Flint
Mr. Sheridan, Conversing official at funeral (uncredited), Doctor
Gayle Kellogg
(uncredited), Cab Driver, Photographer
George Macready
George, Man, Count Borselli
Claire Carleton
Anna, 'Cuddles' LaVerne, Alice Hutchinson