St Mary's Church is an Anglican church in Guildford in Surrey, England; the church's Anglo-Saxon tower is the oldest surviving structure in the town. Charles Lutwidge Dodgson, the author Lewis Carroll, preached here and his funeral was held in the church in 1898. Coming under the Diocese of Guildford, the church has been Grade I listed since 1953.

Guildford is a town in west Surrey, England, around 27 mi (43 km) south-west of central London. As of the 2011 census, the town has a population of about 77,000 and is the seat of the wider Borough of Guildford, which had around 145,673 inhabitants in mid-2022 est. The name "Guildford" is thought to derive from a crossing of the River Wey, a tributary of the River Thames that flows through the town centre.