Mix is a surname. Notable people with the surname include:
Bryant Mix (born 1972), American football player
Charles Eli Mix (1810–1878), American civil servant
E. Townsend Mix (1831–1890), American architect
Erich Mix (1898–1971), German politician
Ron Mix (born 1938), American All-Pro Hall of Fame football player
Ruth Mix (1912–1977), American B-movie actress; daughter of Tom Mix (see below)
Steve Mix (born 1947), National Basketball Association player and women's collegiate basketball coach
Tom Mix (1880–1940), American film actor
Walter Mix (1917–2004), highly decorated German World War II officer