Serra del Montsià (Catalan pronunciation: [ˈsɛrə ðəl munsiˈa]) is a 14.5 km long mountain range in Catalonia.

The Serra del Montsià stretches in a NE - SW direction and lies south of the Ebre river, its northern limit.

The small settlement of La Selleta was built by Germans[1] on a hill below the Serra del Montsià in the last half of the 20th century.

On the southeastern slope there is a large limestone quarry that has degraded a vast area.

[3] The Serra del Montsià is a karstic formation with numerous shafts and caves.