Luarca (Ḷḷuarca in Asturian and as official name) is the principal town in the municipality of Valdés in  Asturias, Spain. A fishing and pleasure port, it has a population of 5,354 (2008) and an area of . The town is from the capital, Oviedo. The Nobel laureate for medicine in 1959, Severo Ochoa, was born in Luarca.