| Red Long | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 28 September 1876 |
| Birth Place: | Burlington, Ontario, Canada |
| Death Place: | Hamilton, Ontario, Canada |
| Debutleague: | MLB |
| Debutdate: | September 11 |
| Debutyear: | 1902 |
| Debutteam: | Boston Beaneaters |
| Finalleague: | MLB |
| Finaldate: | September 11 |
| Finalyear: | 1902 |
| Finalteam: | Boston Beaneaters |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0-0 |
| Stat2label: | Earned run average |
| Stat2value: | 1.13 |
| Stat3label: | Strikeouts |
| Stat3value: | 5 |
| Teams: | |
Nelson "Red" Long (September 28, 1876 – August 11, 1929) was a Major League Baseball pitcher. He played for the Boston Beaneaters of the National League in one game on September 11, 1902.