Église Saint-Martin de Lamballe, Medieval church in Lamballe, France

Église Saint-Martin is a church in Brittany featuring a central Romanesque nave connected to side aisles through Gothic arcades. The southern entrance portal dates to the 11th century and represents one of the oldest parts of the building structure.

The church was founded in 1084 by Count Geffroy Boterel for monks of Marmoutier Abbey. The building underwent several construction phases and modifications that continued through the 18th century.

The parish takes its name from Saint Martin, and a 19th-century stained-glass window in the choir shows him beside the count handing the priory's founding charter to the monks of Marmoutier. Pilgrims came here to pray to Saint Genefort, a 17th-century statue credited with healing sick children. The south chapel altarpiece of 1725, by René L'Hotellier of Guingamp, frames an Adoration of the Magi.

The south entrance is sheltered by a 16th-century porch, whose timber frame bears the carved inscription "L'AN MIL CINQ CENT DIX NEUF JEAN LESNE ME FIT TOUT NEUF". Inside, the Romanesque nave opens to the side aisles through round and pointed arches; the choir and transept were rebuilt in the 16th and 18th centuries. The building was fully restored in 1835.

The south porch's timber frame carries the carved inscription "L'AN MIL CINQ CENT DIX NEUF JEAN LESNE ME FIT TOUT NEUF", recording its remaking in 1519 by Jean Lesne. Carved sculptures decorate the frame pieces at the porch entrance, which shelters a Romanesque round-arched door with carved capitals.