Don Knotts

Henry Limpet

Carole Cook

Bessie Limpet

Jack Weston

George Stickel

Andrew Duggan

Harlock

Larry Keating

Admiral P.P. Spewter

Oscar Beregi Jr.

Nazi Admiral (as Oscar Beregi)

Charles Meredith

Fleet Admiral

Elizabeth MacRae

Ladyfish (voice)

Paul Frees

Crusty (voice)

Wesley Gale

Man Staring Into Window (uncredited)

Leon Alton

Officer at Fleet Admiral's Meeting (uncredited)

Phil Arnold

Short Fisherman (uncredited)

George Bruggeman

Nazi Officer (uncredited)

Paul Busch

Sonar Man (uncredited)

Al Checco

Sailor (uncredited)

Cordy Clark

Giggling Girl (uncredited)

Roydon Clark

Sailor (uncredited)

Sayre Dearing

Passerby/Naval Officer at Meeting (uncredited)

George DeNormand

Nazi Officer (uncredited)

Dan Dowling

Naval Officer at Meeting (uncredited)

Harold Dyrenforth

U-Boat Captain (uncredited)

Louie Elias

Sailor (uncredited)

Lisabeth Field

Miss Barnes (uncredited)

Logan Field

Lieutenant (uncredited)

Fred Fisher

Officer at Fleet Admiral's Meeting (uncredited)

Walter Friedel

Nazi Officer (uncredited)

George Golden

Naval Officer at Fleet Admiral Meeting (uncredited)

Marv Goux

Nazi Officer (uncredited)

John Hale

Sailor (uncredited)

Sam Harris

Officer at Fleet Admiral's Briefing (uncredited)

George Holmes

Scientist (uncredited)

Joseph La Cava

Officer at Fleet Admiral's Briefing (uncredited)

Mike Lally

Naval Officer at Meeting (uncredited)

Harold Miller

Officer at Fleet Admiral's Briefing (uncredited)

Charles Morton

Boat Captain (uncredited)

Henry Norell

Sailor (uncredited)

Jack Pepper

Sport Fishmern (uncredited)

Montie Plyler

Helmsman (uncredited)

Felix Reinsch

Submarine Captain (uncredited)

Waclaw Rekwart

Passerby (uncredited)

Heinz Sadler

Sonar Man (uncredited)

Scott Seaton

Old Man in Shipping Office (uncredited)

Jack Shea

Sailor (uncredited)

John Truax

Policeman (uncredited)

Edward Wermel

Scientist (uncredited)

Feridun Çölgeçen

Scientist (uncredited)

Peter Adams

Lieutenant (uncredited)

Joe DiMona

Adaptation

Jameson Brewer

Screenplay

John C. Rose

Screenplay

Theodore Pratt

Novel

Arthur Lubin

Director

Jean Burt Reilly

Hairstylist

John C. Rose

Producer

Louis Phillips

Makeup Artist

Robert McKimson

Animation Director

Sergei Petschnikoff

Assistant Director

Edmond F. Bernoudy

Assistant Director

Harold E. Stine

Director of Photography

Gerry Chiniquy

Animation Director

Donald Tait

Editor

Paul Burnett

Gaffer

Bill Phillips

Makeup Artist

John W. Dunn

Story Supervisor

Gordon Bau

Makeup Supervisor

Ira Stewart

Assistant Director

Hawley Pratt

Animation Director

Bill Tytla

Animation Director

LeRoy Deane

Art Direction

William L. Kuehl

Set Decoration

Lenore Weaver

Hairstylist

Stanley Jones

Sound

Frank Perkins

Music