Irish Republican Socialist Movement

The Irish Republican Socialist Movement (IRSM) is an umbrella term for:


 * the Irish Republican Socialist Party (IRSP), a Marxist–Leninist Irish republican political party formed in 1974 following a split in Official Sinn Féin.
 * the Irish National Liberation Army (INLA), the paramilitary wing of the IRSP.
 * the Republican Socialist Youth Movement, the youth wing of the IRSP.
 * the Irish Republican Socialist Committees of North America, the representation of the IRSM in North America.