| Bill Hopper | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | August 26, 1891 |
| Birth Place: | Jackson, Tennessee |
| Death Place: | Allen Park, Michigan |
| Debutleague: | MLB |
| Debutdate: | September 11 |
| Debutyear: | 1913 |
| Debutteam: | St. Louis Cardinals |
| Finalleague: | MLB |
| Finaldate: | July 15 |
| Finalyear: | 1915 |
| Finalteam: | Washington Senators |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0-4 |
| Stat2label: | Strikeouts |
| Stat2value: | 12 |
| Stat3label: | Earned run average |
| Stat3value: | 4.18 |
| Teams: |
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William Booth Hopper (August 26, 1891, Jackson, Tennessee – January 14, 1965, Allen Park, Michigan) was a Major League Baseball pitcher. He pitched parts of three seasons in the majors, from until, for the St. Louis Cardinals and Washington Senators. He is buried in Browns Cemetery in Jackson, Tennessee.