4 Squadron

In military terms, 4 Squadron, IV Squadron or 4th Squadron may refer to:


 * Aviation squadrons :
 * No. 4 Squadron RAAF, a unit of the Royal Australian Air Force
 * No. 4 Squadron (India), a unit of the Union of India Air Force
 * No. 4 Squadron RNZAF, a unit of the Royal New Zealand Air Force
 * 4 Squadron SAAF, a unit of the South African Air Force
 * No. IV Squadron RAF, a unit of the United Kingdom Royal Air Force
 * 4th Aero Squadron, later 4th Squadron (Observation), 4th Observation Squadron, 4th Reconnaissance Squadron, a unit of the United States Air Corps
 * 4th Fighter Squadron (United States), a unit of the United States Air Force
 * 4th Space Control Squadron (United States), a unit of the United States Air Force
 * 4th Space Operations Squadron (United States), a unit of the United States Air Force
 * HS-4 (Helicopter Anti-Submarine Squadron 4), a unit of the United States Navy
 * VMAQ-4 (Marine Tactical Electronic Warfare Squadron 4), a unit of the United States Marine Corps


 * Naval squadrons :
 * 4th Battle Squadron (United Kingdom), a formation of the United Kingdom Royal Navy
 * Submarine Squadron 4 (United States), a formation of the United States Navy


 * Ground combat squadrons :
 * 2/4th Cavalry Commando Squadron (Australia), a unit of the Australian Army