Viseu is a municipality in Portugal.
Viseu or Vișeu may also refer to:
Vișeu, a tributary of the river Tisza in northern Romania Viseu, Pará, a municipality in Pará, Brazil Vișeu de Jos, a commune in Maramureș County, Romania Vișeu de Sus, a town in Maramureș County, Romania Viseu Airport, in Viseu, Portugal Viseu District, a district in the Northern and Centro regions of Portugal Viseu 2001, a sports club in Viseu, Portugal
People Duke of Viseu, a Portuguese royal dukedom, including a list of people bearing the title Eleanor of Viseu (1458–1525), Portuguese infanta and later queen consort of Portugal Isabel of Viseu (1459–1521), daughter of Infante Fernando, Duke of Viseu, and Infanta Beatrice