Luke the Dog (1913–1926) was a Staffordshire Terrier that performed as a recurring character in American silent comedy shorts between 1914 and 1920. He was also the personal pet of actress Minta Durfee and her husband, the comedian and director Roscoe "Fatty" Arbuckle.

For six years Luke gained widespread popularity among movie audiences, appearing in one- and two-reelers for Keystone Studios, Comique Film Company, and Joseph M. Schenck Productions. The Staffordshire terrier shared screen time not only with Arbuckle and Durfee but also with other stars and top supporting players of the silent era, including Mabel Normand, Buster Keaton, Al St. John, Molly Malone, Joe Roberts, Betty Compson, and Edgar Kennedy.