Combat Logistics Battalion 15 (CLB-15) is a military logistics battalion in the United States Marine Corps based out of Camp Pendleton, California. It consists of approximately 275 Marines and Sailors. It is part of Combat Logistics Regiment 17 within the 1st Marine Logistics Group (1st MLG), I Marine Expeditionary Force (I MEF). When assigned under the operational control of the 15th Marine Expeditionary Unit (15th MEU), it becomes the Logistics Combat Element (LCE) providing expeditionary combat logistics support to all supported elements of the Marine Expeditionary Unit. CLB-15 has two sister MEU CLBs also based out of Camp Pendleton: CLB-11 and CLB-13.