Air Chief Marshal Sir Peter de Lacy Le Cheminant, GBE, KCB, DFC & Bar (17 June 1920 – 8 April 2018) was a senior commander of the Royal Air Force (RAF), who served as Vice-Chief of the Defence Staff from 1974 to 1976 and Deputy Commander-in-Chief of Allied Forces Central Europe from 1976 until his retirement in 1979.

Educated at Elizabeth College (Guernsey) and the Royal Air Force College Cranwell, Le Cheminant was commissioned into the Royal Air Force (RAF) as a pilot officer (on probation) on 23 December 1939, shortly after the outbreak of the Second World War.

[11][12] He was promoted to the permanent rank of air vice marshal on 1 January 1967,[13] and became Commandant of the Joint Warfare Establishment at Old Sarum on 20 November and Assistant Chief of the Air Staff (Policy) on 1 May 1971.

[14][15] Promoted air marshal on 4 July 1972,[16] he then became Vice-Chief of the Defence Staff in 1974.

[22] He was appointed a Knight Grand Cross of the Order of the British Empire in the 1978 Birthday Honours.