| Jack Farrell | |
| Position: | Second baseman |
| Bats: | Both |
| Throws: | right |
| Birth Date: | December 19, 1892 |
| Birth Place: | Chicago, Illinois, U.S. |
| Death Place: | Chicago, Illinois, U.S. |
| Debutleague: | MLB |
| Debutdate: | April 16 |
| Debutyear: | 1914 |
| Debutteam: | Chicago Federals |
| Finalleague: | MLB |
| Finaldate: | July 5 |
| Finalyear: | 1915 |
| Finalteam: | Chicago Whales |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .229 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | RBI |
| Stat3value: | 49 |
| Teams: |
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John Joseph Farrell (December 19, 1892 – March 24, 1918) was an American baseball player, playing as a second baseman in Major League Baseball. He died in Chicago, Illinois after suffering from pneumonia.