| 1877 Boston Red Caps | |
|---|---|
| National League Champions | |
| League | National League |
| Ballpark | South End Grounds |
| City | Boston, Massachusetts |
| Record | 42–18 (.700) |
| League place | 1st |
| Owner | Arthur Soden |
| Manager | Harry Wright |
The 1877 Boston Red Caps season was the seventh season of the franchise. Arthur Soden became the new owner of the franchise, who won their first National League pennant.