Sir Robert F. Marx (December 8, 1936 – July 4, 2019) was an American pioneer in scuba diving, a prolific author, and was best known for his work with marine archeology. Over his career, he discovered over 5000 shipwrecks in over 60 countries. Although some accused him of treasure hunting, fellow archeologist E. Lee Spence described Marx as the "true father of underwater archaeology". Marx also helped write UNESCO legislation regarding shipwrecks.