Madriu

Madriu may refer to:


 * Madriu-Perafita-Claror Valley (aka Valley of Madriu or "Madriu"), a glacial valley, and UNESCO World Heritage Site, in Andorra
 * Madriu River (or "Madriu"), a river in Andorra that flows into Lake Engolasters
 * HD 131496 b (planet), Star Arcalis, Constellation Bootes; an exoplanet named after the glacial valley in Andorra
 * FC Madriu (futsal), a futsal team in Andorra; see List of top-division futsal clubs in UEFA countries