21 Squadron or 21st Squadron may refer to:
*
No. 21 Squadron RAAF, Royal Australian Air Force
*
No. 21 Squadron (Finland), Finnish Air Force
*
21 Squadron SAAF, South African Air Force
*
No. 21 Squadron RAF, United Kingdom Royal Air Force
*
21st Aeromedical Evacuation Squadron, United States Air Force
*
21st Airlift Squadron
The 21st Airlift Squadron is part of the 60th Air Mobility Wing at Travis Air Force Base, California. It operates C-17 Globemaster III aircraft carrying out United States Air Force global transport missions, duties which involve airlift and ai ...
, United States Air Force
*
21st Bombardment Squadron
021 is:
* in Brazil, the telephone area code for the city of Rio de Janeiro and surrounding cities (Greater Rio de Janeiro)
* in China, the telephone area code for the city of Shanghai.
* in Indonesia, the area code for the city of Jakarta and ...
, United States Air Force
*
21st Fighter Squadron
The 21st Fighter Squadron is part of the 56th Operations Group at Luke Air Force Base, Arizona. It is a United States Air Force squadron that operates Taiwanese-owned General Dynamics F-16 Fighting Falcon aircraft conducting fighter and mainten ...
, United States Air Force
*
21st Operational Weather Squadron, United States Air Force
*
21st Photographic Reconnaissance Squadron, United States Air Force
*
21st Pursuit Squadron
The 21st Special Operations Squadron is a unit within the 353rd Special Operations Group, United States Air Force based at Yokota Air Base, Japan. The unit has been activated and inactivated a number of times in its history. Prior to October 20 ...
, United States Army Air Force
*
21st Space Operations Squadron, United States Air Force
*
21st Special Operations Squadron, United States Air Force
*
21st Tactical Air Support Squadron
First or 1st is the ordinal form of the number one (#1).
First or 1st may also refer to:
*World record, specifically the first instance of a particular achievement
Arts and media Music
* 1$T, American rapper, singer-songwriter, DJ, and reco ...
, United States Air Force
See also
*
21st Brigade (disambiguation) In military terms, 21st Brigade may refer to:
Australia
* 21st Brigade (Australia)
Germany
* 21st Panzer Brigade (Bundeswehr)
Greece
* 21st Armoured Brigade (Greece)
* 21st Brigade (Greece)
India
* 21st Indian Infantry Brigade
United Kingdom ...
*
21st Regiment (disambiguation) 21st Regiment may refer to:
Infantry regiments
* 21 Regiment Special Air Service, a unit of the British Army
* 21st Foot, a former regiment of the British Army
* 21st Infantry Regiment (Thailand), a unit of the Royal Thai Army
* 21st Infantry Reg ...
{{mil-unit-dis