Collis is a surname. Notable people with the surname include:
Charles Collis (1838–1902), Irish-American US Army officer in the American Civil War Dean Collis (born 1985), Australian rugby player Gerry Collis (1930–2024), American football and baseball player and coach Gordon Collis (born 1940), Australian rules footballer Jack T. Collis (1923–1998), American art director James Collis (1856–1918), English soldier John Collis (born 1944), British prehistorian John Day Collis (1816–1879), British headmaster and educational writer John Stewart Collis (1900–1984), British author Luke Collis (born 1988), American football player Maurice Collis (1889–1973), British colonial administrator and writer Robert Collis (1900–1975), Irish doctor and writer Simon Collis (born 1956), British ambassador Steve Collis (born 1981), English football goalkeeper Susan Collis (born 1956), British artist