Kumar Krishna (21 June 1928-19 September 2014) was an American entomologist of Indian origin. He was an expert on the termites and published the definitive systematic treatment of the termites of the world in a seven volume Treatise on the Isoptera of the world in 2013 written with collaborators.

Kumar was born in Rangoon and grew up in Dehra Dun where his father lived as an army physician who had served as a major in World War I.