Leon Mark "Biddy" Dolan (July 9, 1881 – July 15, 1950) was a Major League Baseball first baseman. He played in 32 games in 1914 for the Indianapolis Hoosiers.
Biddy Dolan
| Given name: | Leon Mark Dolan |
| Nicknames: | None |
| Primary Pos: | Firstbase |
| Hght/Wght: | 6'0" / None lbs |
| Bats/Throws: | R / R |
| Born: | Jul 9, 1881 in Onalaska, WI |
| Died: | Jul 15, 1950 in Indianapolis, IN (69 years old) |
| Debut: | Apr 16, 1914 |