St Martin’s Parish Church, Guernsey, Medieval parish church in Saint Martin, Guernsey

St Martin's Parish Church is a parish church in Saint Martin, Guernsey, combining architectural elements from different periods of its development. The building features a main nave, a chancel from 1225, a northern aisle dating to the 1300s, and a porch added around 1520 that displays a sundial from 1751.

A wooden church stood here by 1048, when William, Duke of Normandy, granted St Martin's as a parish church to the Abbot of Marmoutier near Tours. The church was consecrated on 4 February 1199. The Marmoutier link ended in 1415 when Henry V confiscated revenues sent to France, and in 1568 the island churches passed from the Diocese of Coutances to Winchester.

The parish takes its name from Saint Martin, and the church is also called Saint Martin de la Bellouse after the healing spring, la Fontaine de la Bellouse, beside it. At the main gate stands the menhir La Gran'mère du Chimquière, and new brides traditionally place flowers on her head for luck. Church records of baptisms and marriages from 1660 and burials from 1728 are held at the Priaulx Library.

The church hosts regular services and provides guided tours for visitors interested in learning more about its history and architecture. Parking is available nearby at the Community Centre, making access convenient for those arriving by car.

La Gran'mère du Chimquière, the menhir at the main gate, was carved into a female figure between 2500 and 1800 BC, and its head was later recarved in a more Roman style. New brides traditionally place flowers on her head for luck.