斯巴达克同盟（德语：Spartakusbund）是德国社会民主党左翼于1915年创建的反战革命组织。它原称国际派，因该派曾创办《国际》杂志而得名。1916年1月1日，在国际派会议上，以古罗马奴隶起义领袖斯巴达克斯的名字发表了政治通信，称《斯巴达克信札》。此后，该组织被称为斯巴达克派。

该组织在群众中进行反对帝国主义战争的宣传，揭露德国当局的侵略政策和德国社会民主党右翼领导人的叛变行为。1918年11月，斯巴达克派号召了十一月革命。同月，斯巴达克派改组为斯巴达克同盟。12月，斯巴达克同盟联合不莱梅左派创建***。

The Spartacus League (German:Spartakusbund) was a Marxist revolutionary movement organized in Germany during World War I. The League was named after Spartacus, leader of the largest slave rebellion of the Roman Republic. It was founded by Karl Liebknecht, Rosa Luxemburg, Clara Zetkin, and others. The League subsequently renamed itself the Kommunistische Partei Deutschlands (KPD), joining the Comintern in 1919. Its period of greatest activity was during the German Revolution of 1918, when it sought to incite a revolution by circulating the newspaper Spartacus Letters.