Loughinsholin (from Irish Loch Inse Ui Fhloinn 'lough of O'Lynn's island') is a barony in County Londonderry, Northern Ireland. Its southeast borders the northwest shore of Lough Neagh, and itself is bordered by seven other baronies: Dungannon Upper to the south; Strabane Upper to the west; Keenaght and Coleraine to the north; Kilconway, Toome Upper, and Toome Lower to the east. It was formed largely on the extent of the northern part of the medieval Irish túath of Uí Tuirtri.