Suplacu de Barcău is a commune located in the Crișana region of Bihor County, Romania. As of 2021, the commune has a population of 3,813 residents.
The administrative area is composed of six distinct villages: Borumlaca (Baromlak), Dolea (Dólyapuszta), Foglaș, Suplacu de Barcău, Valea Cerului (Cserpatak), and Vâlcelele (Blágarét).