St Mary's Priory Church, in Whitecross Street, Monmouth, Monmouthshire, Wales, is an Anglican church founded as a Benedictine priory in 1075. The current church dates mostly from the 18th and 19th centuries. It was designated a Grade II* listed building in 1952. It is one of 24 buildings on the Monmouth Heritage Trail.

Whitecross Street is a historic street in the town centre of Monmouth, Monmouthshire, Wales. It was in existence by the 15th century, and appears as Whit crose on the 1610 map of the town by cartographer John Speed. It runs in an east-west direction, between Church Street and St James Square. It has been suggested that the street takes its name from a plague cross. Whitecross Street is lined with numerous listed buildings.