Vicente Lombardo Toledano (July 16, 1894 – November 16, 1968) was one of the foremost Mexican labor leaders of the 20th century, and called "the dean of Mexican Marxism [and] the best-known link between Mexico and the international world of Marxism and socialism," In 1936 he founded the Confederation of Mexican Workers (CTM), the national labor federation most closely associated with the ruling party founded by President Lázaro Cárdenas, the Party of the Mexican Revolution (PRM).
Purged from the union after World War II, Lombardo Toledano co-founded, along with Narciso Bassols, the political party, "Partido Popular", later known as the Partido Popular Socialista.