Bill Gunston OBE, FRAeS (1 March 1927 – 1 June 2013) was a British aviation and military author. He flew with Britain's Royal Air Force from 1945 to 1948, and after pilot training became a flying instructor. He spent most of his adult life doing research and writing on aircraft and aviation. He was the author of over 350 books and articles. His work included many books published by Salamander Books.
Born William Tudor Gunston in London on 1 March 1927, Gunston was educated at Pinner County Grammar School. In his spare time, he was Flight Sergeant in the school Air Training Corps squadron and, for several months, the London Philharmonic Orchestra's librarian.
Gunston joined the Royal Air Force in 1945 and went to University College, Durham on an RAF cadetship. In 1946 he moved to No 4 Flying Training School in Bulawayo, Southern Rhodesia to train as a pilot. / He later moved to No 5 Flying Training School at Thornhill were he continued training and then became an instructor flying the North American Harvard. He later flew the de Havilland Vampire F3 a single-seat jet fighter before he left the RAF in 1948.
Gunston attended the Northampton Engineering College until 1951 then he joined the staff of Flight International magazine, where, writing as "W.T.G.", he was appointed Technical Editor in April 1955. From 1969, he was part of the production team on the annual publication Jane's All the World's Aircraft, editing the 2015/16 edition. He was editor of Jane's Aero-Engines from 1995 to 2007.
Gunston married Margaret who had been his secretary and they had two daughters.  He died on 1 June 2013.