Burundi Workers' Party

Burundi Workers' Party (Parti des travailleurs du Burundi, PTB; Umugambwe w'Abakozi b'Uburundi, UBU) was a clandestine communist party in Burundi. Its primary constituency was the large Burundian refugee population situated in neighboring Rwanda.

The party was founded in December 1979 by Salvator Buyagu, Cyprien Ntaryamira, Melchior Ndadaye, Jérôme Ndiho, Festus Ntanyungu, Jean Ndikumana, Sylvestre Ntibantunganya, and several others.

When UBU was disbanded, followers of Ndadaye regrouped into the Front for Democracy in Burundi (FRODÉBU).