452nd

452nd or 452d may refer to:


 * 452d Air Mobility Wing, United States Air Force air mobility unit located at March ARB, California
 * 452d Flight Test Squadron (452 FLTS), part of the 412th Test Wing, based at Edwards Air Force Base, California
 * 452d Operations Group, the flying component of the 452d Air Mobility Wing, assigned to the United States Air Force Reserve
 * 452d Strategic Fighter Squadron, inactive United States Air Force unit