The Mouse That Roared poster
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The Mouse That Roared

6.419591h 23mPGMovieComedy

The Duchy of Grand Fenwick decides that the only way to get out of their economic woes is to declare war on the United States, lose and accept foreign aid. They send an invasion force (in chain mail, armed with bows and arrows) to New York…

DirectorJack Arnold
WritersRoger MacDougall·Stanley Mann
ProducerWalter Shenson

Where to watch

Hollywood SuiteHollywood SuiteHollywood Suite Amazon ChannelHollywood Suite Amazon Channel
Availability shown for Canada · rights vary by country

Cast · Directed by Jack Arnold

PSPeter Sellers
Peter Sellers
Grand Duchess Gloriana XII / Prime Minister Count Rupert Mountjoy / Tully Bascombe
JSJean Seberg
Jean Seberg
Helen Kokintz
WHWilliam Hartnell
William Hartnell
Will Buckley
DKDavid Kossoff
David Kossoff
Professor Alfred Kokintz
LMLeo McKern
Leo McKern
Benter
MPMacDonald Parke
MacDonald Parke
General Snippet
AWAustin Willis
Austin Willis
United States Secretary of Defense
TBTimothy Bateson
Timothy Bateson
Roger
MLMonte Landis
Monte Landis
Cobbley
AGAlan Gifford
Alan Gifford
Air Raid Warden
CGColin Gordon
Colin Gordon
BBC Announcer
HKHarold Kasket
Harold Kasket
Pedro

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More from Jean Seberg · Co-star actress

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More from Jack Arnold · Director

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The Mouse That Roared — streaming FAQ

Which OTT platform streams The Mouse That Roared?

The Mouse That Roared is streaming on Hollywood Suite in Canada, and available to rent or buy on Apple TV Store and YouTube. It's not currently on Netflix.

Is The Mouse That Roared on Netflix?

No, The Mouse That Roared is not on Netflix in Canada as of October 2026. It's currently on Hollywood Suite.

Is The Mouse That Roared on Amazon Prime Video?

The Mouse That Roared isn't included with a Prime Video subscription in Canada, but you can rent or buy it on Amazon Video.

Where can I watch The Mouse That Roared for free?

The Mouse That Roared is available on Hollywood Suite in Canada, but you'll need an active subscription — there's no free option right now.

Is there a sequel to The Mouse That Roared?

Yes — The Mouse That Roared is followed by The Mouse on the Moon (1963) in the Duchy of Grand Fenwick Collection.

Is there a prequel to The Mouse That Roared?

The Mouse That Roared is the first film in the Duchy of Grand Fenwick Collection.

Is The Mouse That Roared part of a trilogy?

No — The Mouse That Roared is part of the Duchy of Grand Fenwick Collection, which has 2 films.

How many movies are in the Duchy of Grand Fenwick Collection?

There are 2 films in the Duchy of Grand Fenwick Collection: The Mouse That Roared (1959) and The Mouse on the Moon (1963).