| Lefty Lorenzen | |
| Position: | Pitcher |
| Bats: | Left |
| Throws: | Left |
| Birth Date: | 12 January 1893 |
| Birth Place: | Davenport, Iowa |
| Death Place: | Davenport, Iowa |
| Debutleague: | MLB |
| Debutdate: | September 12 |
| Debutteam: | Detroit Tigers |
| Finalleague: | MLB |
| Finaldate: | September 12 |
| Finalteam: | Detroit Tigers |
| Statleague: | MLB |
| Stat1label: | Games pitched |
| Stat1value: | 1 |
| Stat2label: | Earned run average |
| Stat2value: | 18.00 |
| Stat3label: | Innings pitched |
| Stat3value: | 2.0 |
| Teams: | |
Adolph Andreas "Lefty" Lorenzen (January 12, 1893 – March 5, 1963) was a Major League Baseball pitcher who played in one game for the Detroit Tigers on September 12, . He pitched in two innings, and allowed four hits and four runs.