The Revolutionary Communist League (RCL) or HaLiga Kommunistit HaMahapchanit was a Trotskyist party in Mandatory Palestine in the late 1930s and 1940s.

It was built out of three components: exiled German Jewish members of Heinrich Brandler’s KPO (Communist Party Opposition – which emerged from the Right Opposition within the Comintern) who became supporters of the International Left Opposition; youth in the Hugim Marxistiim (Marxist Circles), the youth section of a wing of Left Poale Zion, which at the time was linked to the 'centrist' London Bureau; and elements coming from the left Zionist kibbutz movement, Hashomer Hatzair, which was also linked to the London Bureau. Later, in the 1940s, they were joined by Jabra Nicola, an Arab Communist who broke with the Palestine Communist Party over the Molotov–Ribbentrop pact.

The Brit Kommunistim Mahapchanin published a newspaper, Kol Hama’amad (Voice of the Class).^[1]

Tony Cliff was a member, before moving to Britain and joining the RCL's sister party in the Fourth International, the Revolutionary Communist Party (UK) and later leading the International Socialists.