The Oromo Peoples' Democratic Organization (OPDO) is a political party in Ethiopia, and part of the alliance with the Amhara National Democratic Movement, the South Ethiopian Peoples' Democratic Front and the Tigrayan Peoples' Liberation Front that forms the Ethiopian People's Revolutionary Democratic Front (EPRDF). At the last legislative elections, 15 May 2005, the party was part of the Ethiopian People's Revolutionary Democratic Front, that won 327 out of 527 seats.