18 Military ranks of the Royal Air Force

The officer ranks of the Royal Air Force, as they are today, were introduced in 1919. Prior to that Army ranks were used.

The term used in the Royal Air Force (RAF) to refer to all ranks below commissioned officer level is other ranks (ORs). It includes warrant officers (WOs), non-commissioned officers (NCOs) and airmen.

Acting pilot officer is the lowest commissioned grade in the Royal Air Force, being immediately junior to pilot officer. Unlike other RAF ranks which officers may hold in an acting capacity, acting pilot officer is maintained as a separate grade. It normally denotes an officer who has recently been commissioned and joined as a non-graduate direct entrant. Acting pilot officer is not an actual rank, and A/Plt Off's are later regraded to pilot officer, not promoted.

Air chief marshal is a four-star air officer rank which originated and it is used by the Royal Air Force, where it is the most senior peacetime air force rank. The rank is also used by the air forces of many countries that have historical British influence and it is sometimes used as the English translation of an equivalent rank in countries which have a non-British air force-specific rank structure.

Air commodore is a one-star rank and the most junior of the air officer ranks which originated in and continues to be used by the Royal Air Force. The rank is also used by the air forces of many countries which have historical British influence such as Zimbabwe, and it is sometimes used as the English translation of an equivalent rank in countries which have a non-English air force-specific rank structure. The name of the rank is always the full phrase and is never shortened to commodore, which is a rank in various naval forces.

Air marshal is a three-star air-officer rank which originated and it is used by the Royal Air Force. The rank is also used by the air forces of many countries which have historical British influence, including the Commonwealth, and it is sometimes used as the English translation of an equivalent rank in countries which have a non-English air force-specific rank structure.

Air vice-marshal (AVM) is a two-star air officer rank which originated in and continues to be used by the Royal Air Force. The rank is also used by the air forces of many countries which have historical British influence and it is sometimes used as the English translation of an equivalent rank in countries which have a non-English air force-specific rank structure. Air vice-marshals may be addressed generically as "air marshal".

Flight sergeant is a senior non-commissioned rank in the Royal Air Force and several other air forces which have adopted all or part of the RAF rank structure. It is equivalent to a staff sergeant or colour sergeant in the British Army, a colour sergeant in the Royal Marines, and a chief petty officer in the Royal Navy, and has a NATO rank code of OR-7. In the RAF, flight sergeant ranks above chief technician and below warrant officer.

Group captain is a senior commissioned rank in many air forces. Group captain has a NATO rank code of OF-5, meaning that it ranks above wing commander, immediately below air commodore and is the equivalent of the naval rank of captain and the rank of colonel in other services.

Leading aircraftman (LAC) or leading aircraftwoman (LACW) is a junior rank in some air forces. It sits between aircraftman and senior aircraftman, and has a NATO rank code of OR-2. The rank badge is a horizontal two-bladed propeller.

Marshal of the Royal Air Force (MRAF) is the highest rank in the British Royal Air Force (RAF). In peacetime it was granted to RAF officers in the appointment of Chief of the Defence Staff (CDS), and to retired Chiefs of the Air Staff (CAS), who were promoted to it on their last day of service. While surviving marshals of the RAF retain the rank for life, the highest rank to which officers on active service are promoted is now air chief marshal. Although general promotions to Marshal of the Royal Air Force have been discontinued since the British defence cuts of the 1990s, further promotions to the rank may still be made in wartime, for members of the Royal Family and certain very senior RAF air officers in peacetime at the discretion of the monarch; all such promotions in peacetime are only honorary, however. In 2012, Charles, Prince of Wales was promoted to the rank while in 2014 Lord Stirrup, who had served as Chief of the Air Staff and Chief of the Defence Staff for over seven years, was also promoted.

Master aircrew (MAcr) is the warrant-officer rank held by aircrew in the Royal Air Force. It is equivalent to warrant officer in other trades, and is effectively the highest non-commissioned aircrew rank. It has a NATO rank code of OR-9.

Senior aircraftman (SAC) or senior aircraftwoman (SACW) is a rank in the Royal Air Force, ranking between leading aircraftman and senior aircraftman technician and having a NATO rank code of OR-2. The rank, which is non-supervisory, was introduced on 1 January 1951. The rank badge is a three-bladed propeller.

Senior Aircraftman Technician is a rank in the Royal Air Force, ranking between Senior Aircraftman and Corporal and having a NATO rank code of OR-2. SAC Technicians are not NCOs and cannot administratively discipline other personnel.

Sergeant is a rank in many uniformed organizations, principally military and policing forces. The alternative spelling, serjeant, is used in The Rifles and other units that draw their heritage from the British Light Infantry. Its origin is the Latin serviens, 'one who serves', through the French term sergent.

Squadron leader is a commissioned rank in the Royal Air Force and the air forces of many countries which have historical British influence. It is also sometimes used as the English translation of an equivalent rank in countries which have a non-English air force-specific rank structure.

A warrant officer (WO) in the British Armed Forces is a member of the highest group of non-commissioned ranks, holding the Queen's warrant, which is signed by the Secretary of State for Defence. Warrant officers are not saluted as they do not hold the Queen's Commission, however they are to be addressed as 'Sir/Ma'am' by subordinates. Commissioned officers may address warrant officers either by their appointment or as "Mister", "Mrs", or "Ms" and then their last name, e.g. "Mr Smith". Although often referred to along with non-commissioned officers (NCOs), they are not NCOs, but members of a separate group, although all have been promoted from NCO rank.

Wing commander is a senior commissioned rank in the British Royal Air Force and air forces of many countries which have historical British influence, including many Commonwealth countries but not including Canada and South Africa. It is sometimes used as the English translation of an equivalent rank in countries which have a non-English air force-specific rank structure. It ranks immediately above squadron leader and immediately below group captain.