Thomas Francis McManus (September 11, 1856 – November 14, 1938) was a fish merchant who became a naval architect, responsible for introducing the shortened bowsprit and long stern overhang to give speed to his vessels. He was well known for revolutionizing the Gloucester fishing schooner. He made the fastest vessels of their type in the world and was honored on two continents for his skill as a naval architect. He became known as the "Father of the Fishermen's Races." 500 fishing schooners used his designs to improve speed. He was a friend of Sir Thomas Lipton and President Theodore Roosevelt.