| Katsy Keifer | |
| Position: | Pitcher |
| Bats: | Both |
| Throws: | Left |
| Birth Date: | 3 September 1891 |
| Birth Place: | California, Pennsylvania |
| Death Place: | Outwood, Kentucky |
| Debutleague: | MLB |
| Debutdate: | October 8 |
| Debutyear: | 1914 |
| Debutteam: | Indianapolis Hoosiers |
| Finalleague: | MLB |
| Finaldate: | October 8 |
| Finalyear: | 1914 |
| Finalteam: | Indianapolis Hoosiers |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 1-0 |
| Stat2label: | Earned run average |
| Stat2value: | 2.00 |
| Stat3label: | Strikeouts |
| Stat3value: | 2 |
| Teams: |
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Sherman Carl "Katsy" Keifer (September 3, 1891 – February 19, 1927) was a pitcher in Major League Baseball. He played for the Indianapolis Hoosiers in 1914, having made his professional debut in 1913 with the Class D Traverse City Resorters of the Michigan State League.[1]