Michael H. Sexton (1862–1937) was an American baseball executive, whose most significant role was as president of the National Association of Professional Baseball Leagues from 1910 through 1932. Born in Rock Island, Illinois, Sexton served as police chief in his hometown from 1893 to 1895. Sexton later became a partner in the Rock Island Steam Laundry and Towel Supply Company located downtown, where he was known affectionately as "Mr. Baseball" for his passion for the sport and his efforts to establish organized local baseball clubs.