| Pete McShannic | |
| Position: | Third baseman |
| Birth Date: | 20 March 1864 |
| Birth Place: | Pittsburgh, Pennsylvania, U.S. |
| Death Place: | Toledo, Ohio, U.S. |
| Bats: | Switch |
| Throws: | Right |
| Debutleague: | MLB |
| Debutdate: | March 20 |
| Debutyear: | 1888 |
| Debutteam: | Pittsburgh Alleghenys |
| Finalleague: | MLB |
| Finaldate: | October 18 |
| Finalyear: | 1888 |
| Finalteam: | Pittsburgh Alleghenys |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .194 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 5 |
| Teams: |
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Peter Robert McShannic (March 20, 1864 – November 30, 1946) was an American Major League Baseball player. He played for the Pittsburgh Alleghenys of the National League during the 1888 baseball season.