St Mary Magdalen's Church is a Roman Catholic church in the Montpelier area of Brighton, part of the English city of Brighton and Hove. It is one of six Roman Catholic churches in Brighton and one of eleven in the city area. Built by ecclesiastical architect Gilbert Blount in a 13th-century Gothic style to serve the rapidly expanding residential area on the border of Brighton and Hove, it has been listed at Grade II by English Heritage in view of its architectural importance.