John Seward Johnson III (born September 2, 1966) is an American filmmaker, philanthropist and entrepreneur.
He is a great-grandson of Robert Wood Johnson I (co-founder of Johnson & Johnson) and the son of American artist John Seward Johnson II.
He is the co-founder of Buzzfeed and founder and chairman of Harmony Labs, and founder of Eyebeam, Screenwriters Colony and the Filmmakers Collaborative.
He is also a member of the Henry Crown Fellowship at the Aspen Institute.