| Pete Cassidy | |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 8 April 1873 |
| Birth Place: | Wilmington, Delaware |
| Death Place: | Wilmington, Delaware |
| Debutleague: | MLB |
| Debutdate: | April 18 |
| Debutyear: | 1896 |
| Debutteam: | Louisville Colonels |
| Finalleague: | MLB |
| Finaldate: | June 22 |
| Finalyear: | 1899 |
| Finalteam: | Washington Senators |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .257 |
| Stat2label: | Home runs |
| Stat2value: | 3 |
| Stat3label: | Runs batted in |
| Stat3value: | 48 |
| Teams: |
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Peter Francis Cassidy (April 8, 1873 – July 9, 1929) was a Major League Baseball first baseman who played for the Louisville Colonels in 1896 and the Brooklyn Superbas and Washington Senators in 1899. He appeared in 101 games in the major leagues over those two seasons.