The Maestrazgo or Maestrat is a natural and historical mountainous region, located at the eastern end of the Sistema Ibérico mountain range, in Spain. It encompasses the north of the Autonomous Community of Valencia, in Castellón province, and parts of the east of the Aragonese province of Teruel. The area is mountainous and sparsely populated with a rich mixture of flora and fauna.

The Iberian System is one of the major systems of mountain ranges in Spain. It consists of a vast and complex area of mostly relatively high and rugged mountain chains and massifs located in the central region of the Iberian Peninsula, but reaching almost the Mediterranean coast in the Valencian Community in the east.