Capp is a surname. Notable people with the surname include:
Al Capp (1909–1979), American cartoonist and humorist David A. Capp (born 1950), American attorney Dick Capp (born 1942), American football player Frank Capp (1931–2017), American jazz drummer Sally Capp, Australian politician Terry Capp, Canadian drag racer Thomas Capp (died 1635), English painter and gilder