King's Castle may refer to: King's Castle, Ardglass, a twelfth century castle in County Down, Northern Ireland King's Castle, Wells, an Iron Age settlement in central Somerset, England King's Castle, Wiveliscombe, a Neolithic hillfort in south Somerset, England King's Castle, Castle Islands Fortifications, Bermuda, the oldest surviving English fortification in the New World The King's Castle, the only permanent collection of Elvis Presley personal memorabilia in Australia