The Mouse That Roared (1959)

Approved  |   |  Comedy  |  November 1959 (USA)
Your rating:
    1 2 3 4 5 6 7 8 9 10 -/10 X  
Ratings: 7.0/10 from 6,564 users  
Reviews: 66 user | 25 critic

An impoverished backward nation declares a war on the United States of America, hoping to lose, but things don't go according to plan.



(screenplay) (as Roger Macdougall) , (screenplay), 1 more credit »
Watch Trailer
0Check in

Watch Now

From $2.99 on Amazon Video




Learn more

People who liked this also liked... 

Comedy | Romance | Sci-Fi
    1 2 3 4 5 6 7 8 9 10 6.5/10 X  

A tiny country persuades the Americans and Soviets that they're starting a space program, when they really just want some money for new plumbing.

Director: Richard Lester
Stars: Margaret Rutherford, Ron Moody, Bernard Cribbins
    1 2 3 4 5 6 7 8 9 10 7.4/10 X  

A naive aristocrat in search of a career becomes caught up in the struggles between his profit-minded uncle and an aggressive labour union.

Director: John Boulting
Stars: Ian Carmichael, Terry-Thomas, Peter Sellers
Comedy | Crime
    1 2 3 4 5 6 7 8 9 10 7/10 X  

Dodger Lane (Peter Sellers) has planned the perfect robbery while in prison. He intends to break out of prison, steal a fortune in diamonds, and break back into prison before anyone notices... See full summary »

Director: Robert Day
Stars: Peter Sellers, David Lodge, Bernard Cribbins
Comedy | Drama | Romance
    1 2 3 4 5 6 7 8 9 10 5.5/10 X  

A Millionairess and a doctor cannot marry until they meet conditions set-up by their respective parents.

Director: Anthony Asquith
Stars: Sophia Loren, Peter Sellers, Alastair Sim
Comedy | Crime
    1 2 3 4 5 6 7 8 9 10 6.9/10 X  

The crooks in London know how it works. No one carries guns and no one resists the police. Then a new gang appears that go one better. They dress as police and steal from the crooks. This ... See full summary »

Director: Cliff Owen
Stars: Peter Sellers, Lionel Jeffries, Bernard Cribbins
    1 2 3 4 5 6 7 8 9 10 6.8/10 X  

Man-eating businesswoman, Angela Barrows is sent by her US company to Edinburgh to investigate export opportunities. She meets businessman Robert MacPherson en route and he persuades her to... See full summary »

Director: Charles Crichton
Stars: Peter Sellers, Robert Morley, Constance Cummings
Comedy | Drama
    1 2 3 4 5 6 7 8 9 10 6.4/10 X  

An incompetent barrister is assigned to defend a wife murderer.

Director: James Hill
Stars: Peter Sellers, Richard Attenborough, Beryl Reid
    1 2 3 4 5 6 7 8 9 10 5.8/10 X  

This is the end of a glorious military career: General Leo Fitzjohn retires to his Sussex manor where he will write his memoirs. Unfortunately, his private life is a disaster: a confirmed ... See full summary »

Director: John Guillermin
Stars: Peter Sellers, Dany Robin, Margaret Leighton
    1 2 3 4 5 6 7 8 9 10 6.8/10 X  

A minister is accidentally appointed to a snobbish parish.

Directors: John Boulting, Roy Boulting
Stars: Peter Sellers, Cecil Parker, Isabel Jeans
    1 2 3 4 5 6 7 8 9 10 6.4/10 X  

Great Britain has had an international agreement for the last 50 years with a small pacific island. It has been ignored until the death of their king brings it to the attention of the ... See full summary »

Directors: Roy Boulting, Jeffrey Dell
Stars: Terry-Thomas, Peter Sellers, Luciana Paluzzi
The Mouse That Roared (TV Movie 1966)
    1 2 3 4 5 6 7 8 9 10 -/10 X  
Director: Jack Arnold
Stars: Sid Caesar, Richard Deacon, Joyce Jameson
    1 2 3 4 5 6 7 8 9 10 6.6/10 X  

A "Romeo and Juliet"-inspired Cold War satire starring, written (adapted from his stage play) and directed by Peter Ustinov. A tiny but otherwise inconsequential and powerless European ... See full summary »

Director: Peter Ustinov
Stars: Peter Ustinov, Sandra Dee, John Gavin


Complete credited cast:
Helen Kokintz
Will Buckley
David Kossoff ...
MacDonald Parke ...
General Snippet (as Macdonald Parke)
Austin Willis ...
United States Secretary of Defense
Timothy Bateson ...
Monte Landis ...
Cobbley (as Monty Landis)
Alan Gifford ...
Air Raid Warden
Colin Gordon ...
BBC Announcer
Harold Kasket ...


The Duchy of Grand Fenwick, the smallest country in the world, is nestled in the French Alps. Being as isolated as it is, its life is a throwback to olden days. It is a happy, peace-loving country. Its economy solely rests on export of its only wine, Pinot Grand Fenwick, to the US. When a California vintner starts producing and selling a knock-off of the Pinot Grand Fenwick at a lower price, the Grand Fenwick economy goes into a crisis situation, the country on the brink of bankruptcy. Three protests to the US go largely unanswered. Grand Fenwick's Prime Minister, Rupert of Mountjoy, believes the solution is to declare war on the US, and promptly lose the war in less than a day with no casualties on either side, after which the US, which it has historically done, will provide vast financial aide to rebuild the country. Grand Fenwick's monarch, the Grand Duchess Gloriana XII, ultimately supports this concept. The plan is to send an official declaration of war to the US, have a small ... Written by Huggo

Plot Summary | Plot Synopsis


The Hilarious Story of How the Duchy of Grand Fenwick Waged War on the U.S. - and Won See more »




Approved | See all certifications »





Release Date:

November 1959 (USA)  »

Also Known As:

El rugido del ratón  »

Box Office


$450,000 (estimated)

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:

(Westrex Recording System)


(Eastman Color)

Aspect Ratio:

1.85 : 1
See  »

Did You Know?


Peter Sellers made this film in part as a means of emulating his hero, Alec Guinness, by playing multiple roles in one movie. See more »


The narrator tells us that the mock version of Grand Fenwick's wine drove the real wine out of the U.S. market in 1959. A news announcer later reports the score of the last game of the 1958 World Series. See more »


Tulley Bascombe: My girl, and my bomb!
See more »

Crazy Credits

The opening credits include an animation of a big mouse coming out of a castle on its drawbridge. However it is drawn as if it walks off the side of the drawbridge. See more »


Referenced in Mannix: The Mouse That Died (1970) See more »


Frankie and Johnny
(1912) (uncredited)
Music by Bert Leighton and Frank Leighton
See more »

Frequently Asked Questions

See more (Spoiler Alert!) »

User Reviews

May be Peter Sellers' best performance.
2 December 1998 | by (Hampton, VA) – See all my reviews

In this hilarious film Peter Sellers plays three roles (one a duchess) and plays them superbly. I suppose one has to have a taste for understated British humor to fully appreciate this film, but I'm not British and I love it. If you like Peter Sellers -- or just good comedy -- please give this delightful film a try.

32 of 37 people found this review helpful.  Was this review helpful to you?

Message Boards

Recent Posts
Columbia Girl dave-gilblom
Favourite Sellers Film Olga_baikova
The 1958 World Series nelson95
Sequel shanmary
It lost me when.... frightwig71
Uncredited Actress... Furb
Discuss The Mouse That Roared (1959) on the IMDb message boards »

Contribute to This Page

Create a character page for: