| William Stecher | |
| Position: | Pitcher |
| Bats: | Unknown |
| Throws: | Right |
| Birth Date: | 20 October 1869 |
| Birth Place: | Riverside Township, New Jersey |
| Death Place: | Riverside Township, New Jersey |
| Debutleague: | MLB |
| Debutdate: | September 6 |
| Debutyear: | 1890 |
| Debutteam: | Philadelphia Athletics |
| Finalleague: | MLB |
| Finaldate: | October 9 |
| Finalyear: | 1890 |
| Finalteam: | Philadelphia Athletics |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0-10 |
| Stat2label: | Earned run average |
| Stat2value: | 10.32 |
| Stat3label: | Strikeouts |
| Stat3value: | 18 |
| Teams: | |
William Theodore Stecher (October 20, 1869 – December 26, 1926) was a professional baseball player who played pitcher in the Major Leagues in for the Philadelphia Athletics.