Diễn viên
Sidney De Gray
Dr. Hesselink (uncredited)
Charlotte Henry
Pioneer Girl (uncredited)
Mike Lally
Reporter (uncredited)
Kendall McComas
Little Johnny (uncredited)
Raymond Hatton
Drunk (uncredited)
Ronald Colman
Dr. Martin Arrowsmith
Helen Hayes
Leora Tozer Arrowsmith
Lumsden Hare
Sir Robert Fairland
Erville Alderson
Pioneer (uncredited)
Nora Cecil
Nurse (uncredited)
James A. Marcus
Old Doctor (uncredited)
Eric Mayne
Dignitary at Luncheon (uncredited)
A.E. Anson
Professor Max Gottlieb
David Landau
State Veterinarian
George Humbert
Italian Uncle (uncredited)
Adele Watson
Mrs. Novak (uncredited)
Russell Hopton
Terry Wickett
Beulah Bondi
Mrs. Tozer (uncredited)
Cyril Delevanti
Committee Member (uncredited)
Gibson Gowland
Committee Member (uncredited)
Claude King
Dr. Tubbs
Bert Roach
Bert Tozer
Myrna Loy
Joyce Lanyon
Bobby Watson
Little Neighbor (uncredited)
Theresa Harris
Native Mother (uncredited)
Richard Bennett
Gustav Sondelius
Clarence Brooks
Dr. Oliver Marchand
Florence Britton
Miss Twyford (uncredited)
Carl M. Leviness
Ship's Passenger (uncredited)
John Qualen
Henry Novak (uncredited)
Alec B. Francis
Twyford
DeWitt Jennings
B.W. Tozer (uncredited)
Pat Somerset
Ship's Officer (uncredited)
Ward Bond
Cop (uncredited)