Bonchurch is a small village in the civil parish of Ventnor, to the east of the town of Ventnor, now largely connected to the latter by suburban development, on the southern part of the Isle of Wight, England. One of the oldest settlements on the Isle of Wight, it is situated on The Undercliff adjacent to the Bonchurch Landslips Site of Special Scientific Interest. The main village is backed by a cliff to the north, with the Upper Bonchurch section on the clifftop halfway up St Boniface Down on the main A3055 road.

Ventnor is a seaside resort town and civil parish established in the Victorian era on the southeast coast of the Isle of Wight, England, eleven miles (18 km) from Newport. It is situated south of St Boniface Down, and built on steep slopes leading down to the sea. The higher part is referred to as Upper Ventnor ; the lower part, where most amenities are located, is known as Ventnor. Ventnor is sometimes taken to include the nearby and older settlements of St Lawrence and Bonchurch, which are covered by its town council. The population is 5,567 according to the 2021 Census