Hubert Collings Kennedy (born March 6, 1931) is an American author and mathematician.

Kennedy was born March 6, 1931,[1] in Polk County, Florida and studied mathematics at several universities.

He published a definitive biography of Giuseppe Peano who conceived modern mathematical notation in his Formulario mathematico.

In 1986 Kennedy moved to San Francisco, where he continued his historical research, now on the beginnings of the gay movement in Germany.

He has over 200 publications in several languages, from an analysis of the mathematical manuscripts of Karl Marx and a revelation of Marx's homophobia,[3] to theoretical genetics and a proof of the impossibility of an organism that requires more than two sexes in order to reproduce.