The Church of St Mary in Witham Friary, Somerset, England, dates from around 1200 and it has been designated as a Grade I listed building.

[1] The church was originally part of the priory which gave the village its name.

[2] The Witham Charterhouse, a Carthusian Priory founded in 1182 by Henry II,[3] which had peripheral settlements including one at Charterhouse and possibly another at Green Ore.[4] It is reputed to be the first Carthusian house in England.

It has a three-bay nave and continuous one bay apsidal chancel, built of local limestone rubble, supported on each side by four massive flying buttresses.

The Jacobean pulpit contains medieval work and there is a royal arms of 1660 at the west end.