The Sri Lankan independence movement was a peaceful political movement which was aimed at achieving independence and self-rule for the country of Sri Lanka, then British Ceylon, from the British Empire. The switch of powers was generally known as peaceful transfer of power from the British administration to Ceylon representatives, a phrase that implies considerable continuity with a colonial era that lasted 400 years. It was initiated around the turn of the 20th century and led mostly by the educated middle class. It succeeded when, on 4 February 1948, Ceylon was granted independence as the Dominion of Ceylon. Dominion status within the British Commonwealth was retained for the next 24 years until 22 May 1972 when it became a republic and was renamed the Republic of Sri Lanka.

Solomon West Ridgeway Dias Bandaranaike, also known as "The Silver Bell of Asia", was a Ceylonese statesman who served as the fourth Prime Minister of the Dominion of Ceylon, serving from 1956 until his assassination. The founder of the left-wing and Sinhalese nationalist Sri Lanka Freedom Party, his tenure saw the country's first left-wing reforms.