39 Squadron or 39th Squadron may refer to:
No. 39 Squadron RAF, a unit of the United Kingdom Royal Air Force 39th Airlift Squadron (United States), a unit of the United States Air Force 39th Information Operations Squadron (United States), a unit of the United States Air Force Marine Aviation Logistics Squadron 39, a unit of the United States Marine Corps
See also 39th Division (disambiguation) 39th Brigade (disambiguation) 39th Regiment (disambiguation) 39th Battalion (disambiguation)