Devere Allen (1891–1955) was an American socialist and pacifist political activist and journalist. Allen is best remembered as the main editor of The World Tomorrow following the departure of Norman Thomas from the magazine in 1922. Allen was the author of more than 20 books and pamphlets and was active in the leadership of a number of political organizations, including the League for Independent Political Action (1928–1932) and the Socialist Party of America.