| George McMillan | |
| Position: | Outfielder |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | September 1, 1863 |
| Birth Place: | Ontario, Canada |
| Death Place: | Cleveland, Ohio |
| Debutleague: | MLB |
| Debutdate: | August 11 |
| Debutyear: | 1890 |
| Debutteam: | New York Giants |
| Finalleague: | MLB |
| Finaldate: | August 22 |
| Finalyear: | 1890 |
| Finalteam: | New York Giants |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .143 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 1 |
| Teams: |
|
George A. McMillan (1863–1920) was an American professional baseball player. He played ten games for the New York Giants of Major League Baseball's National League during the 1890 season.