Carns is a surname. Notable people with the surname include:
Alistair Carns (born 1980), British politician Edmund C. Carns (1844–1895), American politician Michael P. C. Carns (born 1937), United States Air Force general R. L. Carns (1886–1964), American football coach, athletics administrator Rachel Carns (born 1969), American musician Sally Carns, American graphic designer
See also Carn (disambiguation) Carns Cairn Carns, Nebraska Lists_of_mountains_and_hills_in_the_British_Isles#Carns Carns State Aid Bridge