Mr. Peabody and the Mermaid

William Powell

Arthur Peabody

Ann Blyth

La sirène

Irene Hervey

Polly Peabody

Andrea King

Cathy Livingston

Clinton Sundberg

Mike Fitzgerald

Art Smith

Dr. Harvey

Hugh French

Major Hadley

Beatrice Roberts

Mother

Lumsden Hare

Colonnel Mandrake

Mary Field

Wee Shop Clerk

Cynthia Corley

Nurse

Frederick Clarke

Basil

James Logan

Lieutenant

Mary Somerville

Lady Trebshaw

Dick Ryan

Bartender

Robert Hyatt

Boy