Buin may refer to:
*
Buin, Chile
Buin is a city and commune of Chile, in the Maipo Province, Metropolitan Region of Santiago, which forms part of Greater Santiago. It is a city composed of the towns of Maipo, Viluco, Linderos, Valdivia de Paine, Alto Jahuel, Los Guindos and El R ...
*
Buin, Iran (disambiguation)
*
Buin, Papua New Guinea
Buin is a town on Bougainville Island, and the capital of the South Bougainville District, in the Autonomous Region of Bougainville, in eastern Papua New Guinea. The island is in the northern Solomon Islands Archipelago of the Melanesia region, i ...
on Bougainville Island
*
Buin Rural LLG on Bougainville Island
{{geodis
