| Dan Dumoulin | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 20 August 1953 |
| Birth Place: | Kokomo, Indiana |
| Debutleague: | MLB |
| Debutdate: | September 5 |
| Debutteam: | Cincinnati Reds |
| Finalleague: | MLB |
| Finaldate: | October 1 |
| Finalteam: | Cincinnati Reds |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 1–0 |
| Stat2label: | Earned run average |
| Stat2value: | 7.84 |
| Stat3label: | Strikeouts |
| Stat3value: | 7 |
| Teams: |
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Daniel Lynn Dumoulin (born August 20, 1953) is a former Major League Baseball pitcher. He played parts of two seasons, and, for the Cincinnati Reds. He appeared in a total of eight games, all as a relief pitcher.