Tarcea (Hungarian: Értarcsa) is a commune located in Bihor County, Romania. It is composed of three villages: Adoni (Éradony), Galoşpetreu (Gálospetri) and Tarcea. At the 2002 census, it had 2706 inhabitants, of whom 77% were Hungarians, 16.8% Romanians and 6.1% Roma.