Cast & crew
At the Circus (1939)
Directed by Edward Buzzell Written by Irving Brecher
Cast
| Chico Marx | Antonio Pirelli |
| Groucho Marx | Attorney J. Cheever Loophole |
| Harpo Marx | 'Punchy' |
| Kenny Baker | Jeff Wilson |
| Margaret Dumont | Mrs. Suzanna Dukesbury |
| Florence Rice | Julie Randall |
| Nat Pendleton | Goliath |
| Fritz Feld | Jardinet |
| Eve Arden | Peerless Pauline |
| Jerry Maren | Little Professor Atom (as Jerry Marenghi) |
| Barnett Parker | Whitcomb |
| James Burke | John Carter |
| Irving Bacon | Telegraph Clerk (uncredited) |
| John Binns | Old Man (uncredited) |
| Henry Blair | Undetermined Role (uncredited) |
| George Bookasta | Member of Quarttete (uncredited) |
| Willie Best | Redcap (uncredited) |
| Frank Orth | Chef in Diner (uncredited) |
| James Conaty | Party Guest (uncredited) |
| Frank Darien | Telegrapher (uncredited) |
| Dudley Dickerson | Singer / Dancer - 'Swingali' (uncredited) |
| Betsy Gay | Circus Midget (uncredited) |
| Charles Gemora | Gibraltar (uncredited) |
| Bobby Hale | Train Passenger (uncredited) |
| Harry Hayden | Conductor (uncredited) |
| Shep Houghton | Circus Patron (uncredited) |
| John George | Man Leaving Diner (uncredited) |
| Payne B. Johnson | Boy at Circus (uncredited) |
| Carl M. Leviness | Club Car Train Passenger (uncredited) |
| Buck Mack | Checkers Player (uncredited) |
| Murdock MacQuarrie | Attendant (uncredited) |
| Lillian Randolph | Black Woman - 'Swingali' (uncredited) |
| Matt McHugh | Cabbie (uncredited) |
| Forbes Murray | Captain (uncredited) |
| Emory Parnell | Ringmaster (uncredited) |
| Edmund Mortimer | Governor (uncredited) |
| Larry Steers | Party Guest (uncredited) |
| Fred Walburn | Undetermined Role (uncredited) |
| Robert Winkler | Undetermined Role (uncredited) |
| Hazel Dohlman | Party Guest (uncredited) |
| Stuart Hall | Circus Patron (uncredited) |
Crew
| Stan Rogers | Assistant Art Director |
| Bobby Connolly | Choreographer |
| Franz Waxman | Music Director |
| Irving Brecher | Screenplay |
| Edward Buzzell | Director |
| Leonard Smith | Director of Photography |
| Franz Waxman | Original Music Composer |
| Fred Valles | Costume Design |
| Dolly Tree | Costume Design |
| Edwin B. Willis | Set Decoration |
| William H. Terhune | Editor |
| Cedric Gibbons | Art Direction |
| Mervyn LeRoy | Producer |
| Douglas Shearer | Recording Supervision |
| E.Y. Harburg | Lyricist |
| Harold Arlen | Songs |