Audley's Castle is a 15th-century castle located 1 mile (1.6 km) north-east of Strangford, County Down, Northern Ireland, on a rocky height overlooking Strangford Lough. It is a three-storey Tower house named after its 16th century owner, John Audley. Audley's Castle tower house and bawn is a State Care Historic Monument in the townland of Castleward, in Down District Council area, at grid ref: J5781 5058.