The Progressive Federal Party (PFP) (Afrikaans: Progressiewe Federale Party) was a South African political party formed in 1977. It advocated power-sharing in South Africa through a federal constitution, in place of apartheid. Its leader was Colin Eglin, who was succeeded by Frederik van Zyl Slabbert and then Zach de Beer, but its best known parliamentarian was Helen Suzman, who was for many years the only member of the whites-only parliament to speak out against the apartheid regime.