St Llwchaiarn's church, Llanllwchaiarn was the parish church of Llanllwchaiarn, now within the community of Newtown with Llanllwchaiarn and lies within the historic county of Montgomeryshire in Powys. The church occupies a position on rising ground overlooking the river Severn and is to the north east of Newtown. The present church was rebuilt in 1816. In 2011 the medieval carved screen, originally from St Mary's church in Newtown, was re-positioned in Llanllwchaiarn church