15 Squadron

15 Squadron or 15th Squadron may refer to:

Aviation squadrons 

• No. 15 Squadron RAAF, a unit of the Royal Australian Air Force
• No. 15 Squadron RAF, a unit of the United Kingdom Royal Air Force
• No. 15 Squadron RNZAF, a unit of the Royal New Zealand Air Force
• 15 Squadron SAAF, a unit of the South African Air Force
• 15th Reconnaissance Squadron (United States), a unit of the United States Air Force
• 15th Special Operations Squadron (United States), a unit of the United States Air Force
• 15th Airlift Squadron (United States), a unit of the United States Air Force
• VFA-15 (Strike Fighter Squadron 15), a unit of the United States Navy
• HM-15 (Helicopter Mine Countermeasures Squadron 15), a unit of the United States Navy

Ground combat squadrons 

• 15 Air Assault Close Support Squadron RLC, a unit of the United Kingdom Army
• No. 15 Squadron RAF Regiment, a unit of the United Kingdom Royal Air Force