Louis Paul Leroy (February 18, 1879 – October 10, 1944) was a pitcher in Major League Baseball who played from 1905 through 1910 for the New York Highlanders (1905–06) and Boston Red Sox (1910).

Listed at 5 ft 10 in (1.78 m), 180 lb., Leroy batted and threw right-handed.

[1] In a three-season career, Leroy posted a 3–1 record with 39 strikeouts and a 3.22 ERA in 15 appearances, including five starts, three complete games, one save, and 72⅔ innings of work.

Prior to his baseball career Leroy was a running back at Carlisle Indian School.

This biographical article relating to an American baseball pitcher born in the 1870s is a stub.