Corbu (Hungarian: Gyergyóholló, Hungarian pronunciation: [ɟɛrɡioːholloː]) is a commune in Harghita county, Transylvania, Romania. According to the 2011 census, the commune has 1,503 inhabitants, including 1,306 ethnic Romanians, 131 ethnic Hungarians, and 66 Roma. The commune is composed of two villages, Capu Corbului (Hollósarka) and Corbu.