Moorstown Castle, Medieval castle in County Tipperary, Ireland

Moorstown Castle is a medieval tower house with four stories and a distinctive circular shape, featuring a spiral staircase, multiple musket loops, and a fortified limestone gatehouse. The protective courtyard, known as a bawn, was enclosed with walls and provided additional defense for residents.

James Keating, an ally of the Earl of Ormond, built Moorstown Castle in the late 15th century. In 1635 the castle and its lands passed by mortgage to Robert Cox of Bruff, then by marriage to the Greene family. Richard Grubb bought the property through the Landed Estates Court in 1855, and it remained in private ownership as of 2011.

The Irish name Caisleán Bhaile na Móna refers to the townland of Moorstown, Baile na Móna, about 9.5 km west of Clonmel. The castle appears as a Tipperary location in Stanley Kubrick's 1975 film Barry Lyndon, shot on and around the structure.

The castle stands on a grassed limestone hillock on a small side road off the Clonmel–Cahir road, about 9.5 km west of Clonmel. It is visible from the main road but lies on private land and is not open to visitors, so viewing is from the road only. The grounds cannot be entered.

Moorstown Castle appears in Stanley Kubrick's 1975 film Barry Lyndon, which used several Tipperary locations. The castle stands on a grassed limestone hillock and is visible from the Clonmel–Cahir road, but it sits on private land and cannot be entered.