The church of St. Mary the Virgin is the parish church of Winchfield. The parish of Winchfield is part of the benefice of Hartley Wintney with Elvetham, Winchfield and Dogmersfield, in the Deanery of Odiham within the Diocese of Winchester.

It is not known when St Mary's was built, but it would appear by its architecture to have been originally completed in about 1150 and it is a remarkable example of the solid beauty of Norman work – the original parts being the Nave, Chancel and Tower. It is believed that the same masons were used to build St Mary's and St Cross Church in Winchester since they share many distinctive features of carving and design.

The Chancel Arch is the glory of this Church. It consists of a group of semi-circular arches carved with chevron (dog's tooth) and other Norman ornamentation. The work is rude and not highly finished but is nonetheless effective.

If you would like to see the interior of St Mary's, there is a service in the church every Sunday, and in August the church will be open for visitors every Sunday afternoon from 2.30 to 4.30 pm, except for the Sunday 30th August when we have an Evensong service at 4 o'clock.