Sri Lanka Freedom Party

The Sri Lanka Freedom Party (SLFP; Sinhala: ශ්‍රී ලංකා නිදහස් පක්ෂය, romanised: Śrī Laṁkā Nidahas Pakṣaya; Tamil: இலங்கை சுதந்திரக் கட்சி, romanised: Ilaṅkai Cutantirak Kaṭci) is a centre-leftpolitical party in Sri Lanka. Founded by S. W. R. D. Bandaranaike in 1951, the party was one of Sri Lanka's two main parties from the 1950s to the 2010s, serving as the main rival of the centre-rightUnited National Party. Following a split in the late 2010s and subsequent electoral losses, the influence of the party has since diminished.

The party is generally considered as having a democratic socialist or progressive economic agenda and is often associated with Sinhalesenationalist parties. The party follows a non-aligned foreign policy but has historically had close ties to socialist nations.