| Lew Ritter | |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 7 September 1875 |
| Birth Place: | Liverpool, Pennsylvania, U.S. |
| Death Place: | Harrisburg, Pennsylvania, U.S. |
| Debutleague: | MLB |
| Debutdate: | September 10 |
| Debutyear: | 1902 |
| Debutteam: | Brooklyn Superbas |
| Finalleague: | MLB |
| Finaldate: | August 29 |
| Finalyear: | 1908 |
| Finalteam: | Brooklyn Superbas |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .219 |
| Stat2label: | Home runs |
| Stat2value: | 1 |
| Stat3label: | Runs batted in |
| Stat3value: | 120 |
| Teams: |
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Lewis Elmer Ritter (September 7, 1875 – May 27, 1952) was an American Major League Baseball catcher who played for the Brooklyn Superbas from 1902 to 1908.