St Martin's Church, (Catalan: Sant Martí de Puig-reig, (Catalan pronunciation: [san mar'ti ðə pu'retʃ]) is a Romanesque church from 12th century in Puig-reig, Spain, near the modern parochial church and the former Puig-reig Castle.
The church's construction comprises large stone blocks of various sizes, and its thick side-walls are carried by a number of side-buttresses. The exterior of the church is completely plain, without ornamentation, except at the west wall. Atop the west wall stands the bell-gable with its twin openings, and below it is the main door, which has a simple three-arch archivolt, supported in part by four columns and their capitals.
The church has a single nave, covered with a barrel vault and finished by a semicircular apse. The apse vault begins as a simple-impost cornice, and is separated from the nave by a triumphal arch. At its rear is a single narrow window, vaulted with a voussoir arch. It still contains some of its original Romanesque murals.
Coordinates: 41°58′15″N 1°52′53″E / 41.97083°N 1.88139°E