St Mary's Church is in the West Bank area of Widnes, Cheshire, England. The church is recorded in the National Heritage List for England as a designated Grade II* listed building. It is an active Anglican parish church in the diocese of Liverpool, the archdeaconry of Warrington and the deanery of Widnes. Together with the churches of St Paul, Widnes, and St Mary, Hale, it forms the South Widnes Team.