Excalibur, a project to produce a set of software components for the Java programming language DARPA's Excalibur program, an attempt to apply phased-array optics to laser weapons Excalibur, a prehistoric axe made of red quartzite found at the Archaeological site of Atapuerca, Spain Excalibur BBS, a Windows-based GUI BBS client Project Excalibur, an initiative to develop an orbiting nuclear-bomb-pumped X-ray laser Places Excalibur (Arizona), a summit in Arizona, United States Excalibur Estate, a housing estate in Catford, South London, England Excalibur Pot, a cave/pothole in the North Yorkshire Moors, United Kingdom Transport Excalibur (automobile), an American specialty car introduced in 1963 with bodywork similar to a 1928 Mercedes-Benz Excalibur (racing yacht), an Australian racing yacht Excalibur, one of three Sikorsky VS-44 flying boats Excalibur Aircraft Excalibur, an ultralight aircraft Excalibur 800, an aftermarket conversion of the Beechcraft Twin Bonanza twin-engined aircraft, originally developed by Swearingen Aircraft Excalibur Queen Air, a similar aftermarket conversion of the Beechcraft Queen Air twin-engined aircraft, also originally developed by Swearingen HMS Excalibur, a ship in the British Royal Navy Lockheed Model 44 Excalibur, a cancelled four-engined airliner Weapons Excalibur rifle Mark-I, a modified version of the INSAS assault rifle M982 Excalibur, 155mm GPS-guided extended range artillery projectile Other uses British Columbia Excalibur Party, a minor political party in British Columbia, Canada Excalibur (wrestler), former professional wrestler and current color commentator for All Elite Wrestling Excalibur Primary School, a school in Alsager, United Kingdom See also King Arthur (disambiguation) The Sword in the Stone (disambiguation) Xcalibur (disambiguation)