Ksawery "Big Bill" Wyrożemski ("Tso-very Veera-zhem-ski") (23 July 1915 – 15 February 1967) was an exile Polish fighter pilot who flew Hawker Hurricanes and Supermarine Spitfires as an officer with the Polish Air Forces's 308 and 315 "City of Dęblin" Fighter Squadrons from April 1942 until the end of World War II. One of the aircraft he piloted in 1942 was Spitfire Mk. Vb, BM597, now flying with the at Duxford. Wyrożemski later flew the North American Mustang Mk. IIIs when No.315 Squadron converted in March 1944.