Cassatt may refer to:
People Alexander Cassatt (1839–1906), president of the Pennsylvania Railroad Edward B. Cassatt (1868–1922), American soldier and breeder of thoroughbred horses, son of Alexander Edward R. Cassatt (1839–1907), American politician from Iowa Elsie Foster Cassatt (1875–1931), American sportswoman, daughter of Alexander Mary Cassatt (1833–1926), American painter, sister of Alexander
Other Cassatt, South Carolina, unincorporated community, United States Cassatt Quartet, also known as Cassatt String Quartet 6936 Cassatt (6573P-L), asteroid
Companies Cassatt & Company, a brokerage and investment banking firm in existence from 1872 to 1940 Cassatt Corporation, software company headed by William T. Coleman III