| Ernie Mason | |
| Position: | Pitcher |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | 1870 |
| Birth Place: | New Orleans, Louisiana |
| Death Place: | Covington, Louisiana |
| Debutleague: | MLB |
| Debutdate: | July 17 |
| Debutyear: | 1894 |
| Debutteam: | St. Louis Browns |
| Finalleague: | MLB |
| Finaldate: | August 1 |
| Finalyear: | 1894 |
| Finalteam: | St. Louis Browns |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0-3 |
| Stat2label: | Earned run average |
| Stat2value: | 7.15 |
| Stat3label: | Strikeouts |
| Stat3value: | 3 |
| Teams: |
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Ernest Joseph Mason (1870–1904) was a professional baseball player who played pitcher in the Major Leagues for the St. Louis Browns in 1894.