Matarraña (Spanish: [mataˈraɲa]) or Matarranya (Catalan: [mataˈraɲa])[1] is a comarca in eastern Aragon, bordering the Spanish Autonomous Communities of Catalonia and Valencia.

It is located in Teruel Province, in the mountainous Sistema Ibérico area.

It belongs to the Catalan-speaking strip in eastern Aragon known as La Franja.

The historical comarca was split for administrative purposes when provincial boundaries were traced following the territorial division of Spain in 1833.

This former northern territory, that included the municipalities of Fayón (Faió del Matarranya), Maella and Fabara (Favara del Matarranya), is now the eastern end of the Bajo Aragón-Caspe/Baix Aragó-Casp comarca.