The Freedom Socialist Party is a left-wing socialist political party with a revolutionary feminist philosophy based in the United States. It views the struggles of women and minorities as part of the struggle of the working class. It emerged from a split in the United States Socialist Workers Party in 1966. The party's Seattle branch, with support from individuals in other cities, split off from the SWP over what it described as the SWP's entrenched opportunism and undemocratic methods. The party has branches and members in the United States, as well as Australia, England, Germany and New Zealand. The current National Secretary of the FSP is Doug Barnes.

Clara Fraser was a socialist feminist political organizer, who co-founded and led the Freedom Socialist Party and Radical Women.