Colwell Bay (grid reference SZ323873) is a bay in the west of the Isle of Wight. It is located between the towns of Totland and Yarmouth. The bay's northernmost point is Cliff's End (Fort Albert) the closest point of the Island to the British mainland, with Hurst Castle lying at the end of a long peninsula just 1500 metres (a little less than a mile) to the northwest. The southernmost point is Warden Point.