| 1888 Pittsburgh Alleghenys | |
|---|---|
| League | National League |
| Ballpark | Recreation Park |
| City | Allegheny, Pennsylvania |
| Owner | William A. Nimick |
| Manager | Horace B. Phillips |
The 1888 Pittsburgh Alleghenys season was the seventh season of the Pittsburgh Alleghenys franchise and their second in the National League. The Alleghenys finished sixth in the league standings with a record of 66–68.