Proletarian Party may refer to: Proletarian Catalan Party, a political party in Catalonia, Spain Proletarian Liberation Party, a political party in Brazil Proletarian Masses Party, a short-lived political party in Japan Proletarian parties in Japan, 1925–1932, a group of political parties in Japan Proletarian Nationalist Party, a political party in Peru Proletarian Party of Peru, a communist party in Peru Proletarian Party of America, a communist party in the United States, 1920–1971 Proletarian Party (Murba), a defunct national communist political party in Indonesia Pattali Makkal Katchi (), a political party in Tamil Nadu, India Purba Banglar Sarbahara Party, a Bangladeshi communist party