Oliver Evans (September 13, 1755 – April 15, 1819) was an American inventor, engineer and businessman. A pioneer in the fields of automation, materials handling and steam power, Evans was one of the most prolific and influential inventors in the early years of the United States. He left behind a long series of accomplishments, most notably designing and building the first fully automated industrial process; America's first high-pressure steam engine; and the first (albeit crude) amphibious vehicle and American automobile.