Atlantic Marine was an American shipbuilding and construction company.

In 2006, the company was itself taken over by an investment firm run by former U.S. Navy Secretary John F. Lehman and became known simply as Atlantic Marine.

The company offered a variety of services, including shipbuilding, ship repairs, maintenance and conversion, and also steel fabrication for industrial uses.

The Alabama drydock facility was capable of servicing vessels of up to 46,400 tons, including cargo and cruise ships, and also offered repair and conversion facilities for "drilling rigs and semi-submersibles that served the offshore oil industry.

"[3] The Jacksonville drydock serviced vessels of up to 14,600 tons, and specialized in "mega-yacht repairs and refits, as well as commercial and U.S. Navy ship repairs and conversions, marine fabrication, and industrial fabrication and machining.