VIVERO, a town of north-western Spain, in the province of Lugo; on the Ria de Vivero, an estuary formed by the river Landrove, which here enters the Bay of Biscay. Pop. (1930) 12,429. Vivero is an old-fashioned town, connected with the opposite bank of the estuary by a bridge of twelve arches and a causeway. Its fishing fleet, its coasting trade and the agri cultural products of the fertile country around are important.