Arthur Lewis Newton (January 31, 1883 – July 19, 1950) was an American athlete who competed mainly in the distance events.

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.

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