42 Squadron

42 Squadron or 42nd Squadron may refer to:


 * No. 42 Squadron RAAF, a unit of the Royal Australian Air Force
 * No. 42 Squadron (Finland), a unit of the Finnish Air Force
 * No. 42 Squadron RNZAF, a unit of the New Zealand Air Force
 * No. 42 Squadron RAF, a unit of the United Kingdom Royal Air Force
 * No. 42 Radar Squadron, a unit of the United States Air Force
 * 42d Flying Training Squadron, a unit of the United States Air Force
 * 42d Electronic Combat Squadron, a unit of the United States Air Force
 * 42d Expeditionary Airlift Squadron, a unit of the United States Air Force
 * 42d Attack Squadron, a unit of the United States Navy
 * VA-42 (Attack Squadron 42), a unit of the United States Navy
 * Marine Aviation Logistics Squadron 42, a unit of the United States Marine Corps