| Pete Sweeney | |
| Position: | Third baseman |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | December 31, 1863 |
| Birth Place: | San Mateo, California |
| Death Place: | San Francisco, California |
| Debutleague: | MLB |
| Debutdate: | September 28 |
| Debutteam: | Washington Nationals |
| Finalleague: | MLB |
| Finaldate: | October 2 |
| Finalteam: | Philadelphia Athletics |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .209 |
| Stat2label: | Home runs |
| Stat2value: | 1 |
| Stat3label: | Runs scored |
| Stat3value: | 53 |
| Teams: |
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Peter Jay Sweeney (December 31, 1863 – August 22, 1901) was a third baseman in Major League Baseball in the 19th century. His professional career stretched from 1879 through 1897, though only 1888–1890 were spent in the Major Leagues.