Castejón de Tornos is a municipality in the province of Teruel, in the autonomous community of Aragon, Spain. It is a small rural settlement in the Sistema Ibérico region of eastern Spain, within the comarca of Jiloca.
The municipality is sparsely populated. According to the 2004 census (INE), Castejón de Tornos had a population of 91 inhabitants. Like many villages in the Teruel province, it has experienced depopulation over the twentieth century as residents moved to larger cities.
The village sits in a highland area characterized by a continental climate with cold winters and warm, dry summers. Its economy has traditionally been based on agriculture and livestock. The surrounding landscape features rolling hills, cereal fields, and scattered oak and pine woodland typical of the region.