| Ernie Maun | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 3 February 1901 |
| Birth Place: | Clearwater, Kansas |
| Death Place: | Corpus Christi, Texas |
| Debutleague: | MLB |
| Debutdate: | May 16 |
| Debutteam: | New York Giants |
| Finalleague: | MLB |
| Finaldate: | June 11 |
| Finalteam: | Philadelphia Phillies |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 3–5 |
| Stat2label: | Earned run average |
| Stat2value: | 6.19 |
| Stat3label: | Strikeouts |
| Stat3value: | 14 |
| Teams: | |
Ernest Gerald Maun (February 3, 1901 – January 1, 1987) was a Major League Baseball pitcher who played for the New York Giants in and the Philadelphia Phillies in .