Arthur Lee Newton (June 24, 1883 – May 1956) was an American athlete who competed mainly in the distance events.
He participated in the 1900 Summer Olympics in Paris in the 2,500 metre steeplechase finishing 4th and in the marathon finishing 5th.
He also competed for the United States in the 1904 Summer Olympics held in St. Louis, United States in the 4 mile team where he won the gold medal with his teammates George Underwood, Paul Pilgrim, 800 meter silver medalist Howard Valentine, and David Munson. He also won bronze medals in the marathon and 2,590 meter steeplechase.
He was married twice; his second wife was Frieda Muehlichen, and their daughter was Elaine.