Today, the Sri Lanka Freedom Party (SLFP) celebrates its 73rd anniversary, commemorating its foundation on September 2, 1951, by S.W.R.D. Bandaranaike. Originally a centrist political force, the SLFP quickly gained prominence, particularly after the 1956 elections when Bandaranaike became the fourth Prime Minister of Sri Lanka.

Under Bandaranaike's leadership, significant reforms were introduced, including the nationalization of key industries and the declaration of Sinhala as the official language. Over the decades, the SLFP, often in coalition with left-wing allies, has been instrumental in shaping Sri Lankan politics, holding power for over 30 years and producing two presidents who led the country for 21 years.

The party also played a crucial role in transitioning Sri Lanka from Dominion status to a republic. A key figure in its history, Sirimavo Bandaranaike, led the party for 41 years and remains renowned as the world’s first female Prime Minister.