Villa Unión is a city in the north-eastern Mexican state of Coahuila and serves as the municipal seat of the Villa Unión municipality. It is located in the region of Coahuila, which forms part of Mexico's interior plateau.
As the administrative center of its municipality, Villa Unión functions as a local government hub for the surrounding area. The city maintains the typical role of a municipal seat in providing services and governance to residents of the broader Villa Unión municipality.