Villarreal (Spanish: [ˈbiʎareˈal]), officially Vila-real (Valencian: [ˈvila reˈaɫ]), is a city in the province of Castelló, in the Valencian Community, Spain.

The city is located at 42 m above sea level, 7 km to the south of the province's capital (Castelló de la Plana), which it is separate from by the Mijares (or Millars) River. it has 51,367 inhabitants (2010 data), most of them living in the urban area that covers about 10.72% of its comarca's 55.4 km surface. Ranked by population, it is the second-largest city in the province (after the capital), and fifteenth in the Valencian Community.