BAE Systems Marine Limited was the shipbuilding subsidiary of BAE Systems, formed in 1999, which manufactured the full range of naval ships; nuclear submarines, frigates, destroyers, amphibious ships.

The latter was merged into a BAE Systems/VT Group joint venture, BVT Surface Fleet in 2008, which subsequently became BAE Systems Surface Ships in 2009.

Marconi Marine owned the major assets which made up BAE Systems Marine: In 2003 the YSL and Govan shipyards were placed under the control of a new unit of BAE, BAE Systems Naval Ships.

The shipyard at Barrow became part of BAE Systems Submarine Solutions.

This reorganisation was, to quote the company, "to provide a focus on the UK and export surface warship building market."