9 Squadron

9 Squadron or 9th Squadron may refer to:

Aviation units

 * No. 9 Squadron RAAF, Australia
 * 9 Squadron (Belgium)
 * No. 9 Squadron IAF, India
 * 9th Squadron (Iraq)
 * No. 9 Squadron RNZAF, New Zealand
 * No. 9 Squadron PAF, Pakistan
 * No. 9 Squadron SLAF, Sri Lanka
 * No. 9 Squadron RAF, United Kingdom
 * 9th Aero Squadron, Air Service, United States Army
 * 9th Attack Squadron, United States Air Force
 * 9th Airlift Squadron, United States Air Force
 * 9th Bomb Squadron, United States Air Force
 * 9th Combat Operations Squadron, United States Air Force
 * 9th Fighter Squadron, United States Air Force
 * 9th Operational Weather Squadron, United States Air Force
 * 9th Space Operations Squadron, United States Air Force
 * 9th Special Operations Squadron, United States Air Force

Other units

 * 9 Parachute Squadron RE, Royal Engineers, British Army
 * Helicopter Anti-Submarine Squadron 9 or HS-9, United States Navy