St. Mary’s Collegiate Church Gowran, also known as the Church of the Blessed Virgin of the Assumption, is a church in the centre of the town of Gowran, County Kilkenny, Ireland. The site is a National Monument in the care of the Gowran Development Association (GDA) and the Office of Public Works (OPW). The church and its family connections have been of huge importance to Gowran and further afield over the centuries. The church is a collegiate church, which means that the priests or chaplains attached to it lived in community together. The present church was not a monastery or an abbey; however experts believe the church was built on the site of an earlier monastery. The presence of an Ogham stone on the site, which is on display in the chancel, suggests there was a place of worship here dating back 2000 years to Celtic times or beyond.

Gowran is a town located on the eastern side of County Kilkenny, Ireland. The historic St. Mary's Collegiate Church is located in the centre of Gowran close to Gowran Castle. Gowran Park race course and Golf Course are located one km from the centre of Gowran. Gowran is located on the R448 regional road where it is crossed by the R702 regional road. The town is in a townland and civil parish and barony of the same name.