Peter Cooper (February 12, 1791 – April 4, 1883) was an American industrialist, inventor, philanthropist, and politician. He designed and built the first American steam locomotive, the Tom Thumb, founded the Cooper Union for the Advancement of Science and Art, served as its first president, and stood for election as the Greenback Party's candidate in the 1876 presidential election.
Cooper began tinkering at a young age while working in various positions in New York City. He purchased a glue factory in 1821 and used that factory's profits to found the Canton Iron Works, where he earned even larger profits by fabricating machinery such as the Tom Thumb. Cooper's success as a businessman and inventor continued over the ensuing decades, and he became the first mill operator to successfully use anthracite coal to puddle iron. He also developed numerous patents for products such as gelatin and participated in the laying of the first transatlantic telegraph cable.