| Les Cox | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 14 August 1904 |
| Birth Place: | Junction, Texas |
| Death Place: | San Angelo, Texas |
| Debutleague: | MLB |
| Debutdate: | September 11 |
| Debutteam: | Chicago White Sox |
| Finalleague: | MLB |
| Finaldate: | September 26 |
| Finalteam: | Chicago White Sox |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0–1 |
| Stat2label: | Strikeouts |
| Stat2value: | 3 |
| Stat3label: | Earned run average |
| Stat3value: | 5.40 |
| Teams: |
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Leslie Warren Cox (August 14, 1904 – October 14, 1934) was an American professional baseball player. A pitcher, he appeared in two games in Major League Baseball in 1926 for the Chicago White Sox.
Cox died at age 30 of complications after undergoing an appendectomy.