Olcea (Hungarian: Olcsa) is a commune in Bihor County, northwestern Romania with a population of 2,871 people. It is composed of four villages: Călacea (Bélkalocsa), Hodișel (Pusztahodos), Olcea and Ucuriș (Ökrös).
Coordinates: 46°41′N 21°59′E / 46.683°N 21.983°E / 46.683; 21.983