罗纳德·考尔曼

Ronald Colman

饰：Dr. Martin Arrowsmith

海伦·海丝

Helen Hayes

饰：Leora Arrowsmith

理查德·本内特

Richard Bennett

饰：Gustav Sondelius

A.E. Anson

饰：Professor Max Gottlieb

Clarence Brooks

饰：Oliver Marchand

亚历克·弗朗西斯

Alec B. Francis

饰：Twyford (as Alec Francis)

Claude King

饰：Dr. Tubbs

伯特·罗奇

Bert Roach

饰：Bert Tozer

玛娜·洛伊

Myrna Loy

饰：Mrs. Joyce Lanyon

罗素·霍普顿

Russell Hopton

饰：Terry Wickett

大卫·兰多

David Landau

饰：State Veterinarian

Lumsden Hare

饰：Sir Robert Fairland - Governor

埃尔维利·阿尔德森

Erville Alderson

饰：Pioneer (uncredited)

比尤拉·邦蒂

Beulah Bondi

饰：Mrs. Tozer (uncredited)

沃德·邦德

Ward Bond

饰：Cop (uncredited)

弗洛伦丝·布里顿

Florence Britton

饰：Miss Twyford (uncredited)

Nora Cecil

饰：Nurse (uncredited)

西德尼·德格雷

Sidney De Gray

饰：Doctor Hesselink (uncredited)

麦克·多林

Mike Donlin

饰：Undetermined Role (uncredited)

Walter Downing

饰：City Clerk (uncredited)

特蕾莎·哈里斯

Theresa Harris

饰：Native Mother (uncredited)

雷蒙德·哈顿

Raymond Hatton

饰：Drunk (uncredited)

夏洛特·亨利

Charlotte Henry

饰：Ann - Arrowsmith's Grandmother (uncredited)

George Humbert

饰：Italian Uncle (uncredited)

德威特·詹宁斯

DeWitt Jennings

饰：Mr. B.W. Tozer (uncredited)

詹姆斯·A·马库斯

James A. Marcus

饰：Old Doctor (uncredited)

Eric Mayne

饰：Dignitary (uncredited)

埃德蒙·莫蒂默

Edmund Mortimer

饰：Ship's Passenger (uncredited)

约翰·奎尔伦

John Qualen

饰：Henry Novak (uncredited)

Pat Somerset

饰：Ship's Officer (uncredited)

Adele Watson

饰：Mrs. Novak (uncredited)

博比·沃森

Bobby Watson

饰：Undetermined Role (uncredited)

艾瑞克·威尔顿

Eric Wilton

饰：Ship's Officer (uncredited)