Shane's Castle is a ruined castle near Antrim in County Antrim, Northern Ireland, which was mostly destroyed in 1816 by fire. The castle is situated on the north-east shores of Lough Neagh, 2.7 miles from Randalstown. Built in 1345 by a member of the Clandeboy O'Neill dynasty, it was originally known as Edenduffcarrick, meaning "brow of black rock". It owes its present name to Shane McBrian McPhelim O'Neill, who ruled Lower Clandeboy between 1595 and 1617.

Antrim is a town and civil parish in County Antrim in the northeast of Northern Ireland, on the banks of the Six Mile Water, on the northeast shore of Lough Neagh. It had a population of 25,606 people in the 2021 Census. It is the county town of County Antrim and was the administrative centre of Antrim Borough Council until its 2015 merger with Newtownabbey Borough Council to form Antrim and Newtownabbey Borough Council. It is 22 miles (35 km) northwest of Belfast.