Lanka Mahajana Sabha was a Ceylonese Political party founded by F. R. Senanayake in 1919. It was affiliated to the United National Party in 1946 and played an important role in attainment of Sri Lanka’s independence in 1948. The first prime minister of Ceylon, Don Stephen Senanayake and his brother Don Charles Senanayake were prominent members of the Lanka Mahajana Sabha.Henry Woodward Amarasuriya was the president of the party for 44 years.