Popular Action Movement - Marxist–Leninist () is a Hoxhaist communist party in Nicaragua that surged out of a split from the Sandinista National Liberation Front (FSLN) in the early 1970s. Since 1985 it is officially named the Marxist–Leninist Party of Nicaragua (), but the original name MAP-ML is far more known and has been used when participating in elections.
The party was founded in 1967 by pro-Chinese members of the Nicaraguan Socialist Party. When Albania broke with China, the MAP-ML followed Albania.
The party has a trade union wing, Frente Obrero (FO, Workers' Front) that was founded in 1974. The wing organized Milicias Populares Antisomocistas (MILPAS), which fought against the dictatorship of the Somoza regime. As of 1980, MAP-ML had only about 25 members, but through FO and El Pueblo, the daily newspaper of the party, it exerted much influence in the society.