42 Squadron

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