Marine Wing Support Group 17 (MWSG-17) is a United States Marine Corps aviation ground support unit based at Marine Corps Base Camp Butler, Japan. They are currently composed of two squadrons that provide the 1st Marine Aircraft Wing (1st MAW) and III Marine Expeditionary Force with complete airfield operation services (less air traffic control), engineer and transportation support, medical assistance, food services, security support, and other direct combat and combat service support to the Aviation Combat Element.