- Country: USA
- Genres: Comedy, Musical
- Release: 1941-06-20
- Director: Charles Reisner
- Writers: Sid Kuller , Hal Fimberg , Ray Golden , Nat Perrin
- Language: English | Italian
- Stars: Groucho Marx , Chico Marx , Harpo Marx , Tony Martin , Virginia Grey , Margaret Dumont , Douglass Dumbrille , William Tannen , Marion Martin , Virginia O’Brien
- Runtime: 83 min
- Awards: N/A
- AKA: Ballade i butikken (Denmark) , Dom towarowy (Poland) , The Big Store (United Kingdom) , Il Bazar delle follie (Italy) , Casa de Doidos (Portugal, Portuguese Republic) , Casa Maluca (Brazil) , Tienda de locuras (Argentina) , Tienda de locos (Spain) , Murder with Music (United States of America) , En dag i varuhuset (Finland) , A Grande Loja (Brazil) , Step This Way (United States of America) , Üç Ahbap Çavuşlar Polis Hafiyesi (Turkey) , Détectives à la manque (Belgium) , Tienda de Locuras (Colombia) , Les Marx au grand magasin (France, French Republic) , En dag i varuhuset (Sweden) , Detectieven tegen wil en dank (Belgium) , Botrány az áruházban (Hungary) , Большой магазин , Tienda de locuras (Mexico) , The Bargain Basement (United States of America) , Големият магазин (Bulgaria) , Die Marx Brothers im Kaufhaus (Germany) , Päivä tavaratalossa (Finland) , The Big Store , The Big Store (United States of America) , マルクス兄弟 デパート騒動 (Japan) , Treis trelloi astynomoi (Greece) , Tienda de locuras (Uruguay, Eastern Republic of) , Paniek in het warenhuis (Netherlands the)
- Plot: The Phelps Department Store is about to be sold by its new part owner, Tommy Rogers with the permission of Martha Phelps, the dowager co-owner. The current manager doesn't want this as the irregularities in the books will show up. When an attempt is made on Tommy's life, Martha enlists the worst private eye in the world to protect him, Wolf J. Flywheel.
- IMDB:tt0033388
The Big Store Cast · · · ALL
Charles Reisner
Director
Groucho Marx
Wolf J. Flywheel
Chico Marx
Ravelli
Harpo Marx
Wacky
Tony Martin
Tommy Rogers
Virginia Grey
Joan Sutton
Margaret Dumont
Martha Phelps
Douglass Dumbrille
Mr. Grover
William Tannen
Fred Sutton
Marion Martin
Peggy Arden
Virginia O’Brien
Kitty
Henry Armetta
Guiseppi
Anna Demetrio
Maria
Paul Stanton
George Hastings
Russell Hicks
Arthur Hastings
Bradley Page
Duke
King Baggot
Store Employee (uncredited)
Enid Bennett
Clerk (uncredited)
Clara Blandick
(1876–1962)
Customer Seeking Record (uncredited)
Milton Kibbee
Press Photographer (uncredited)
Charles Lane
Finance Company Man (uncredited)