Lanka Prajathanthravadi Pakshaya ('Ceylon Democratic Party') was a political party in Sri Lanka. LPP was led by Dr. Wijeyananda Dahanayake. In the 1960 elections LPP was part of the 'Mahajana Eksath Peramuna' coalition, consisting of the Sri Lanka Freedom Party, Viplavakari Lanka Sama Samaja Party, Jathika Vimukthi Peramuna and LPP.