St Helen's Church is the Anglican parish church of Ashby-de-la-Zouch, in the deanery of North West Leicestershire and the Diocese of Leicester. There was a church in the town in the 11th century, but the core of the present building mainly dates from work started in 1474, when the church was rebuilt by William Hastings at the same time that he converted his neighbouring manor house into a castle. The church was refurbished in about 1670 to create more space, but the large and increasing size of the congregation led to further work in 1829, and a major rebuild in 1878–80, including the widening of the nave by the addition of two outer aisles.