St Mary's is a redundant church in the hamlet of Kenderchurch to the north of the village of Pontrilas, in Herefordshire, England (). It is recorded in the National Heritage List for England as a designated Grade II listed building and is under the care of the Friends of Friendless Churches.
The church is, by tradition, linked with Cynidr, a 6th century Welsh saint, and the first bishop of Glasbury in Powys. There is no architectural evidence for this, but traces of a Norman structure do remain, including the font. The chancel roof is medieval in date. Little else of medieval date remains, following a whole-scale Victorian restoration by William Chick of Hereford in 1870-1871.
The church continued in use until closure in 2013. Attempts to sell it for conversion to a private home were unsuccessful and after a decade of non-use the building came into the care of the Friends of Friendless Churches in 2023. In 2025, the Friends secured funding for a ã500,000 restoration, including a substantial donation from Pontrilas Saw Mill which stands adjacent to the church.
St Mary's is a relatively small church, and is constructed to a simple plan, with a nave, chancel, and porch, and terminating with a bellcote. The building materials are sandstone rubble with stone dressings and a roof of Welsh slate. The interior contains some stained glass which was probably manufactured by Clayton and Bell. The church is a Grade II listed building. A cross in the churchyard with a 15th century base and a 19th century cross has its own Grade II listing.