Marine Wing Support Group 37 (MWSG-37) was a United States Marine Corps aviation combat service support unit based at Marine Corps Air Station Miramar that was composed of 4 squadrons, that provided the 3rd Marine Aircraft Wing and I Marine Expeditionary Force with complete airfield operation services, engineer and transportation support, medical assistance, food services, security support, and other direct combat and combat service support to Aviation Combat elements. MWSG-37 was decommissioned on 15 June 2012 but due to operational requirements were reactivated on 29 November 2018. As part of the Marine Corps' Force Design initiative, MWSG-37 was again decommissioned on 17 July 2020.