Louis Alexander North (June 15, 1891 – May 15, 1974) was a professional baseball player. He was a right-handed pitcher over parts of seven seasons (1913, 1917, 1920–1924) with the Detroit Tigers, St. Louis Cardinals and Boston Braves. For his career, he compiled a 21–16 record in 172 appearances, most as a relief pitcher, with a 4.43 earned run average and 199 strikeouts.
In 1918 North served in the military during World War I.