- Country: USA
- Genres: Comedy, Musical
- Release: 1939-10-20
- Director: Edward Buzzell
- Writers: Irving Brecher
- Language: English
- Stars: Groucho Marx , Chico Marx , Harpo Marx , Kenny Baker , Florence Rice , Eve Arden , Margaret Dumont , Nat Pendleton (1895–1967) , Fritz Feld , James Burke
- Runtime: 87 min
- Awards: N/A
- AKA: Um dia no Circo (Portugal, Portuguese Republic) , At the Circus (United States of America) , Een dag in het circus (Netherlands the) , Die Marx Brothers im Zirkus , Un jour au cirque (Belgium) , Üç Ahbap Çavuşlar Sirkte (Turkey) , At the Circus , Marx Bros i sirkus (Norway) , En dag på circus (Finland) , To tsirko ton trellon (Greece) , Un jour au cirque (France, French Republic) , Os Irmãos Marx no Circo (Brazil) , Botrány a cirkuszban (Hungary) , Oi adelfoi Marx sto tsirko (Greece) , Um Dia no Circo (Portugal, Portuguese Republic) , Tre pazzi a zonzo (Italy) , Los hermanos Marx en el circo (Mexico) , マルクス兄弟珍サーカス (Japan) , La circ (Romania) , Een dag in het circus (Belgium) , Bracia Marx w cyrku (Poland) , En dag på cirkus (Sweden) , En kväll på cirkus (Sweden) , At the Circus (United Kingdom) , The Marx Brothers at the Circus (United States of America) , A Day at the Circus (United States of America) , Una tarde en el circo (Spain) , En dag i cirkus (Denmark) , Los hermanos Marx en el circo (Uruguay, Eastern Republic of) , Päivä sirkuksessa (Finland) , Ein Tag im Zirkus (Austria) , В цирке
- Plot: Jeff Wilson, the owner of a small circus, owes his partner Carter $10000. Before Jeff can pay, Carter lets his accomplices steal the money, so he can take over the circus. Antonio Pirelli and Punchy, who work at the circus, together with lawyer Loophole try to find the thief and get the money back.
- IMDB:tt0031060
At the Circus Cast · · · ALL
Edward Buzzell
Director
Groucho Marx
Attorney J. Cheever Loophole
Chico Marx
Antonio Pirelli
Harpo Marx
'Punchy'
Kenny Baker
Jeff Wilson
Florence Rice
Julie Randall
Eve Arden
Peerless Pauline
Margaret Dumont
Mrs. Suzanna Dukesbury
Nat Pendleton
(1895–1967)
Goliath
Fritz Feld
Jardinet
James Burke
John Carter
Jerry Maren
Little Professor Atom (as Jerry Marenghi)
Barnett Parker
Whitcomb
Irving Bacon
Telegraph Clerk (uncredited)
Willie Best
Redcap (uncredited)
Frank Orth
Chef in Diner (uncredited)
John Binns
Old Man (uncredited)
Henry Blair
Undetermined Role (uncredited)
George Bookasta
Member of Quarttete (uncredited)
James Conaty
Party Guest (uncredited)
Frank Darien
Telegrapher (uncredited)
Dudley Dickerson
Singer / Dancer - 'Swingali' (uncredited)
Betsy Gay
Undetermined Role (uncredited)
Charles Gemora
Gibraltar (uncredited)
John George
Man Leaving Diner (uncredited)
Bobbie Hale
Train Passenger (uncredited)