| George Mangus | |
| Position: | Left fielder |
| Bats: | Left |
| Throws: | Right |
| Birth Date: | 22 March 1890 |
| Birth Place: | Red Creek, New York |
| Death Place: | Rutland, Massachusetts |
| Debutleague: | MLB |
| Debutdate: | August 20 |
| Debutteam: | Philadelphia Phillies |
| Finalleague: | MLB |
| Finaldate: | September 20 |
| Finalteam: | Philadelphia Phillies |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .200 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 3 |
| Teams: | |
George Graham Mangus (May 22, 1890 – August 10, 1933) was a Major League Baseball left fielder who played in ten games for the Philadelphia Phillies late in the season.