Marine Wing Communications Squadron 48 (abbreviated as MWCS-48) is a communications squadron in the United States Marine Corps Reserve. As part of Marine Air Control Group 48, MWCS-48 provides expeditionary communications for the 4th Marine Aircraft Wing, the Aviation Combat Element of Marine Forces Reserve. They are based at Naval Station Great Lakes and fall under the command of Marine Air Control Group 48 and the 4th Marine Aircraft Wing.