Tom Maidhc O'Flaherty (Irish: Tomás Ó Flaithearta, 1889-1936) was an Irish Communist politician in the early 20th century, a supporter of the Trotskyist James P. Cannon, and writer in English and Irish. In 1919, he, along with John Reed, Jim Larkin and others, helped to found the Communist Labor Party, a precursor to the Communist Party USA.