International Socialist League

International Socialist League
AbbreviationISL
FounderDavid Ivon Jones
FoundedSeptember 1915 (1915-09)
Dissolved12 February 1921 (1921-02-12)
Merged intoCPSA
IdeologyLibertarian socialism
Marxism
De Leonism
Syndicalism
Political positionFar-left

The International Socialist League of South Africa was the earliest major Marxist party in South Africa, and a predecessor of the South African Communist Party. The ISL was founded around the syndicalist politics of the Industrial Workers of the World and Daniel De Leon.