La Serra d'en Galceran (Valencian pronunciation: [la ˈsɛra ðeŋ ɡalseˈɾan], Spanish: Sierra Engarcerán) is a small municipality in the province of Castelló, Valencian Community, Spain.

It is located inland surrounded by the mountain range known as Serra d'en Galceran.

There are ancient Iberian settlements in an area known as El Castellàs, as well as some cave paintings that have been declared a World Heritage Site by UNESCO.

Historically the first documents are from the years 1213 and 1238 and they tell that James I of Aragon gave the territory, just conquered from the saracens, to nobleman Pere Valimanya.

Nicolau de Casalduch, known as "l'antic" or "el vinculador" gave the municipal charter to the town on 6 December 1512.