Horse Feathers is a 1932 American pre-Code comedy film starring the Marx Brothers. It stars the Four Marx Brothers, Thelma Todd and David Landau. It was written by Bert Kalmar, Harry Ruby, S. J. Perelman, and Will B. Johnstone. Kalmar and Ruby also wrote the original songs for the film. Several of the film's gags were taken from the Marx Brothers' stage comedy from the 1900s, Fun in Hi Skule. The term horse feathers is U.S. slang for "nonsense, rubbish, balderdash," attributed originally to Billy DeBeck. As a work published in 1932 and renewed within 28 years, it will enter the public domain on January 1, 2028.

The Marx Brothers were an American family comedy act that was successful in vaudeville, on Broadway, and in 14 motion pictures from 1905 to 1949. Five of the Marx Brothers' fourteen feature films were selected by the American Film Institute (AFI) as among the top 100 comedy films, with two of them, Duck Soup (1933) and A Night at the Opera (1935), in the top fifteen. They are widely considered by critics, scholars and fans to be among the greatest and most influential comedians of the 20th century. The brothers were included in AFI's 100 Years... 100 Stars list of the 25 greatest male stars of Classical Hollywood cinema, the only performers to be included collectively.