| Harry Otis | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Left |
| Birth Date: | 5 October 1886 |
| Birth Place: | West New York, New Jersey |
| Death Place: | Teaneck, New Jersey |
| Debutleague: | MLB |
| Debutdate: | September 5 |
| Debutyear: | 1909 |
| Debutteam: | Cleveland Naps |
| Finalleague: | MLB |
| Finaldate: | September 29 |
| Finalyear: | 1909 |
| Finalteam: | Cleveland Naps |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 2-2 |
| Stat2label: | Earned run average |
| Stat2value: | 1.37 |
| Stat3label: | Strikeouts |
| Stat3value: | 6 |
| Teams: | |
Harry George Otis (October 5, 1886 - January 29, 1976) nicknamed "Cannonball" was an American Major League Baseball pitcher who played for one season. He pitched five games for the Cleveland Naps during the 1909 Cleveland Naps season.