The Matarranya (Spanish: Río Matarraña, Catalan: Riu Matarranya) is a river in the provinces of Teruel and Zaragoza, Aragon, Spain.

It begins its course at 1,200 m northeast of the Tossal d'Encanader, Ports de Beseit.

[1] limestone massif near La Pobla de Benifassà.

The Matarranya flows roughly from south to north into the Ebro (Ebre), 4 km east of Faió (Fayón).

This river gives its name to the Matarranya Catalan language-speaking comarca of Aragon.