The 3rd Maintenance Battalion is a battalion of the United States Marine Corps that provides intermediate-level maintenance for the III Marine Expeditionary Force's tactical ordnance, engineer, motor transport, communications electronics and general support ground equipment.

The unit falls under the command of 3rd Sustainment Group (Experimental) and the 3rd Marine Logistics Group, and is based at Camp Kinser, Okinawa, Japan, with the exception of Regional Maintenance Operations Companies, which are located at nearby Camp Foster and Camp Hansen, respectively.

To provide direct and general support, intermediate (second through fourth echelon) maintenance support for Marine Corps furnished tactical ordnance, engineer, motor, communications-electronics and general support equipment of III MEF.

To provide reparable support to include stock, store, and fiscal accounting for normal accounting for normal and low-density reparables.

This United States Marine Corps article is a stub.