| Willie Jensen | |
| Position: | Pitcher |
| Bats: | Left |
| Throws: | Right |
| Birth Date: | November 17, 1889 |
| Birth Place: | Philadelphia, Pennsylvania |
| Death Place: | Philadelphia, Pennsylvania |
| Debutleague: | MLB |
| Debutdate: | September 10 |
| Debutteam: | Detroit Tigers |
| Finalleague: | MLB |
| Finaldate: | October 2 |
| Finalteam: | Philadelphia Athletics |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 1-3 |
| Stat2label: | Strikeouts |
| Stat2value: | 9 |
| Stat3label: | Earned run average |
| Stat3value: | 3.64 |
| Teams: |
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William Christian Jensen (November 17, 1889 – March 27, 1917) was a Major League Baseball pitcher. He played parts of two seasons in the majors, for the Detroit Tigers and for the Philadelphia Athletics.