42 Squadron or 42nd Squadron may refer to:
No. 42 Squadron RAAF, Australia No. 42 Squadron (Finland) No. 42 Squadron RNZAF, New Zealand No. 42 Squadron RAF, United Kingdom 42 Radar Squadron, Canada 42nd Air Refueling Squadron, United States Air Force 42nd Attack Squadron, United States Air Force 42nd Electronic Combat Squadron, United States Air Force 42nd Expeditionary Airlift Squadron, United States Air Force 42nd Flying Training Squadron, United States Air Force 42nd Tactical Missile Squadron, United States Air Force VA-42 (U.S. Navy), Attack Squadron 42 Marine Aviation Logistics Squadron 42, United States Marine Corps
See also 42nd Division (disambiguation) 42nd Group (disambiguation) 42nd Brigade (disambiguation) 42nd Regiment (disambiguation) 42nd Battalion (disambiguation)