Kelsay is a surname. Notable people with the surname include:
Chad Kelsay (born 1977), American football player Chris Kelsay (born 1979), American football player John Kelsay, American academic John Kelsay (judge) (1819–1899), American politician Willie Kelsay (1892–1952), American jockey
See also Kelsay, Indian scout Kelsey (given name) Kelsey (surname)