| Claude Thomas | |
| Position: | Pitcher |
| Bats: | Left |
| Throws: | Left |
| Birth Date: | 15 May 1890 |
| Birth Place: | Stanberry, Missouri |
| Death Place: | Sulphur, Oklahoma |
| Debutleague: | MLB |
| Debutdate: | September 13 |
| Debutteam: | Washington Senators |
| Finalleague: | MLB |
| Finaldate: | October 2 |
| Finalteam: | Washington Senators |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 1–2 |
| Stat2label: | Earned run average |
| Stat2value: | 4.13 |
| Stat3label: | Strikeouts |
| Stat3value: | 7 |
| Teams: | |
Claude Alfred "Lefty" Thomas (May 15, 1890 – March 6, 1946) was a Major League Baseball pitcher who played for the Washington Senators in .