| Biddy Dolan | |
| Position: | First baseman |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | July 9, 1881 |
| Birth Place: | Onalaska, Wisconsin, U.S. |
| Death Place: | Indianapolis, Indiana, U.S. |
| Debutleague: | MLB |
| Debutdate: | April 16 |
| Debutteam: | Indianapolis Hoosiers |
| Finalleague: | MLB |
| Finaldate: | June 8 |
| Finalteam: | Indianapolis Hoosiers |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .223 |
| Stat2label: | Home runs |
| Stat2value: | 1 |
| Stat3label: | Runs batted in |
| Stat3value: | 15 |
| Teams: |
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Leon Mark "Biddy" Dolan (July 9, 1881 – July 15, 1950) was a Major League Baseball first baseman. He played in 32 games in for the Indianapolis Hoosiers.