Fairbanks Morse Defense, a subsidiary of Arcline Investment Management, is an American manufacturer of engines and other products. Established in 2020, it is one of three separate corporate entities that can trace its roots to Fairbanks-Morse, an American manufacturing company that operated independently from 1823 to 1958. The company's structure includes Fairbanks Morse Services, Fairbanks Morse Technology, and FMD's Strategic Collaborators.
The company has supplied marine technologies, engines, details, and more to the U.S. Navy, U.S. Coast Guard, Military Sealift Command, and Canadian Coast Guard. As of 2024, Fairbanks Morse Defense products power more than 80% of the United States Navy ships with medium-speed engines.[citation needed]