Marvão is a municipality in Portalegre District in Portugal. The population in 2020 was 2,972, in an area of 154.90 km2. The present Mayor is Luís Vitorino, elected by the Social Democratic Party. The municipal holiday is September 8. Perched on a quartzite crag of the Serra de São Mamede, Marvão's name is derived from an 8th-century Muwallad rebel, named Ibn Marwan.