Petreu is a commune in Bihor County, Crișana, Romania with a population of 3,080 people as of 2021. It is composed of four villages: Abrămuț, Crestur, Făncica, and Petreu.

Crișana is a geographical and historical region of Romania named after the Criș River and its three tributaries: the Crișul Alb, Crișul Negru, and Crișul Repede. In Romania, the term is sometimes exte