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.