St Gregory’s is an Anglican Church (Church of England) serving most of the town of Sudbury, Suffolk in the United Kingdom.  St Gregory’s has been in Sudbury for many centuries and continues to be a focus for the local community and is seen by many as the "Mother Church" of Sudbury. St Gregory’s aims to provide for the spiritual needs of the town and wants all who come, whether just as visitors to the building, or to join in with the worship, to feel a warm welcome.

Offering a range of Christian worship on weekdays and Sundays which is both welcoming and inclusive. St Gregory's continues to serve the local community through baptisms, weddings and funerals, and as a venue for Civic and other services, and as a church building that is open daily and provides a peaceful space for visits and for prayer and reflection.