Radical Democratic Party (RDP), was a political party in India which existed at the time of the Second World War. Also known as the Radical Communist Party. RDP evolved out of the League of Radical Congressmen, which had been founded in 1939 by former Communist International leader M.N. Roy. Roy founded Radical Democratic Party in 1940 with the purpose of engaging India in the war to support the Allies. RDP also worked for Indian independence. RDP was against the industrial strike that took place at the time.