| Official Name: | Preston St Mary |
| Country: | England |
| Region: | East of England |
| Coordinates: | 52.12°N 0.84°W |
| Post Town: | Sudbury |
| Postcode Area: | CO |
| Postcode District: | CO10 |
| Constituency Westminster: | South Suffolk |
| Shire County: | Suffolk |
| Shire District: | Babergh |
| Hide Services: | Yes |
| Population: | 177 |
| Population Ref: | (2011)[1] |
| Static Image: | 'The Six Bells' inn, Preston St. Mary, Suffolk - geograph.org.uk - 183264.jpg |
| Static Image Width: | 240px |
| Static Image Caption: | 'The Six Bells' inn, Preston St. Mary |
Preston St Mary is a village and civil parish in the Babergh district, in the county of Suffolk, England. Located to the north-east of Lavenham. The parish includes the hamlets of Rooksey Green and Whelp Street. In 2011 the parish had a population of 177.
The Church of St Mary dates from the 14th and 15th centuries but was rebuilt in 1868 after being struck by lightning in 1758. It is a grade I listed building.
Preston Hall is a 17th-century grade II* listed country house.
An episode of Time Team was filmed in the village in 1996.[2]