Castletownshend (Irish: Baile an Chaisleáin) is a village about 8 km from Skibbereen, in County Cork, Ireland. The village developed around a small 17th-century castle built by Richard Townsend, whose descendants still reside there. The main street of the town, lined with large homes from the 18th century, runs down a sharply sloped hill leading to Castlehaven Harbour and the castle. In the church porch there is an oar from a rescue boat from the Lusitania (sunk by a German U-Boat in 1915) in memory of the many drowned passengers and crew who were brought into the harbour.