Leonard Preston Gilmore
- Bats Right, Throws Right
- Height 6' 3", Weight 175 lb.
- School State Teachers College at Indiana
- Debut October 1, 1944
- Final Game October 1, 1944
- Born November 3, 1917 in Fairview Park, IN USA
- Died February 18, 2011 in Oklahoma City, OK USA
Len Gilmore pitched more than a decade in the minors and appeared in one game in the major leagues.
The only major league pitcher to come out of Indiana University of Pennsylvania, Gilmore began his pro career with the Refugio Oilers of the Texas Valley League in 1938. After winning 21 games for the Albany Senators in 1944, he made his only big league appearance with the Pittsburgh Pirates on the final day of that season. Starting the second game of an October 1st doubleheader against the Philadelphia Phillies, he went the distance, allowing 7 earned runs over 8 innings and taking the loss. After his big league stint, he pitched for several teams in the minors, including the Oakland Oaks, and played until 1952.