Shirenewton is a village and community in Monmouthshire, south east Wales. It is located 3 miles due west of Chepstow, 5 miles (8 km) by road. The village stands around 500 feet above sea level, and has extensive views of the Severn Estuary and Bristol Channel. The population of the village and the conjoined village of Mynydd-bach was 657 in 2011.

Shirenewton Hall, originally Shirenewton Court, is a country house and estate adjoining the village of Shirenewton, Monmouthshire, Wales, about 3 miles (4.8 km) west of Chepstow. The 29.5-acre (11.9 ha) estate is located on a hillside, and commands views across the "Golden Valley" to the west and the Severn Estuary in the south. The main building was constructed around 1830, and partly rebuilt around 1900–1910, on the site of an earlier house which was the birthplace of William Blethyn, Bishop of Llandaff. The house is now a Grade II listed building, and the teahouse in the adjoining Japanese garden is listed as Grade II*. The gardens are included on the Cadw/ICOMOS Register of Parks and Gardens of Special Historic Interest in Wales. The estate is not open to the public.