Arrowsmith

Dr. Martin Arrowsmith

Ronald Colman

Leora Tozer Arrowsmith

Helen Hayes

Gustav Sondelius

Richard Bennett

Professor Max Gottlieb

A.E. Anson

Dr. Oliver Marchand

Clarence Brooks

Twyford

Alec B. Francis

Dr. Tubbs

Claude King

Bert Tozer

Bert Roach

Joyce Lanyon

Myrna Loy

Terry Wickett

Russell Hopton

State Veterinarian

David Landau

Sir Robert Fairland

Lumsden Hare

Pioneer (uncredited)

Erville Alderson

Cop (uncredited)

Ward Bond

Mrs. Tozer (uncredited)

Beulah Bondi

Miss Twyford (uncredited)

Florence Britton

Nurse (uncredited)

Nora Cecil

Dr. Hesselink (uncredited)

Sidney De Gray

Committee Member (uncredited)

Cyril Delevanti

City Clerk (uncredited)

Walter Downing

Committee Member (uncredited)

Gibson Gowland

Reporter (uncredited)

Sherry Hall

Native Mother (uncredited)

Theresa Harris

Drunk (uncredited)

Raymond Hatton

Pioneer Girl (uncredited)

Charlotte Henry

Italian Uncle (uncredited)

George Humbert

B.W. Tozer (uncredited)

DeWitt Jennings

Reporter (uncredited)

Mike Lally

West Indies Townswoman at Meeting (uncredited)

Lillian Lawrence

Ship's Passenger (uncredited)

Carl M. Leviness

Old Doctor (uncredited)

James A. Marcus

Dignitary at Luncheon (uncredited)

Eric Mayne

Little Johnny (uncredited)

Kendall McComas

Ship's Passenger (uncredited)

Edmund Mortimer

Henry Novak (uncredited)

John Qualen

Dignitary (uncredited)

Edward Reinach

Intern (uncredited)

Milton Royce

Bartender (uncredited)

Harry Schultz

Ship's Officer (uncredited)

Pat Somerset

Mrs. Novak (uncredited)

Adele Watson

Little Neighbor (uncredited)

Bobby Watson

Ship's Officer (uncredited)

Eric Wilton