Carballeda de Avia is a municipality in the province of Ourense, in the autonomous community of Galicia, Spain. It belongs to the comarca of O Ribeiro and is located in the west of the province, about 5.7 kilometres (3.5 mi) northwest of Ribadavia, off the A-52 road.
The municipality is a wine-producing area, with roughly 3,000 hectares dedicated to vineyards, some of them at an altitude of 479 metres (1,572 ft). Its river valleys include those of the Miño, Avia, Arnoia and Barbantiño.
As of 2012, Carballeda de Avia had a population of 1,487 people.