Bueu is a municipality in Galicia, Spain, in the province of Pontevedra. Bueu belongs to the Comarca of O Morrazo together with Cangas do Morrazo, Moaña and Marín. It is located on the northern edge of the Morrazo peninsula.
Isla de Ons and its small archipelago, part of the Atlantic Islands of Galicia National Park, belong administratively to Bueu.