Lanka Prajathanthravadi Pakshaya (Ceylon Democratic Party) was a short-lived political party in Ceylon (now Sri Lanka) formed by a former Prime Minister of the country Wijayananda Dahanayake.
In September 1959, former Prime Minister SWRD Bandaranaike was assassinated and Dahanayake replaced him. He launched his own party, the LPP, and put forward 101 candidates for the March 1960 General Election.
His party only won 4 seats and Dahanayake himself lost his seat of Galle by 483 votes to WDS Abeygoonawardena.
The new government which was formed could not obtain a majority in Parliament and another election was called for July 1960. Dahanayake’s party put forward just six candidates and won 2 seats. Dahanayake managed to win back his seat in Galle.
The LPP later merged into the Sri Lanka Freedom Socialist Party, a breakaway group from the Sri Lanka Freedom Party.