Groucho Marx
Captain Jeffrey T. Spaulding
Harpo Marx
The Professor
Chico Marx
Signor Emanuel Ravelli
Zeppo Marx
Horatio Jamison
Lillian Roth
Arabella Rittenhouse
Margaret Dumont
Mrs. Rittenhouse
Louis Sorin
Roscoe Chandler
Hal Thompson
John Parker
Margaret Irving
Mrs. Whitehead
Kathryn Reece
Grace Carpenter
Robert Greig
Hives
Edward Metcalf
Hennessey
Robert Allen
House Party Guest (uncredited)
Donald MacBride
