Matarranya is a Catalan comarca, in the Franja de Ponent, and currently administered by the Spanish Autonomous Community of Aragon. Its capital is Vall-de-roures, and it borders the comarques of Baix Cinca, Terra Alta, Baix Ebre, Montsià, Baix Maestrat and Ports, the last two of which are Valencian comarques.