| Fred Stiely | |
| Position: | Pitcher |
| Bats: | Left |
| Throws: | Left |
| Birth Date: | 1 June 1901 |
| Birth Place: | Pillow, Pennsylvania, U.S. |
| Death Place: | Valley View, Pennsylvania, U.S. |
| Debutleague: | MLB |
| Debutdate: | October 6 |
| Debutteam: | St. Louis Browns |
| Finalleague: | MLB |
| Finaldate: | June 13 |
| Finalteam: | St. Louis Browns |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 1–1 |
| Stat2label: | Earned run average |
| Stat2value: | 5.97 |
| Stat3label: | Strikeouts |
| Stat3value: | 9 |
| Teams: |
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Fred Warren "Lefty" Stiely (June 1, 1901 – January 6, 1981) was an American Major League Baseball pitcher who played for the St. Louis Browns from to .