Field Marshal Sir John Lyon Chapple, was a British Army officer who served as Chief of the General Staff (CGS), the professional head of the British Army, from 1988 to 1992. Early in his military career he saw action during the Malayan Emergency and again during the Indonesia–Malaysia confrontation and later in his career he provided advice to the British government during the Gulf War.
- Occupation
- military personnel
- Position held
- Chief of the General Staff (United Kingdom), Governor of Gibraltar
- Citizenship
- United Kingdom
- Born
- May 27, 1931
- Died
