| Tom Fitzsimmons | |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 6 April 1890 |
| Birth Place: | Oakland, California, U.S. |
| Death Place: | Oakland, California, U.S. |
| Debutleague: | MLB |
| Debutdate: | June 12 |
| Debutyear: | 1919 |
| Debutteam: | Brooklyn Robins |
| Finalleague: | MLB |
| Finaldate: | June 25 |
| Finalyear: | 1919 |
| Finalteam: | Brooklyn Robins |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .000 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 0 |
| Teams: |
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Thomas William Fitzsimmons (April 6, 1890 – December 20, 1971) was an American professional baseball player who played third base in four games for the Brooklyn Robins during the 1919 baseball season. He was born in Oakland, California, and attended Saint Mary's College of California.