| 1997 O'Byrne Cup | |
| Province: | Leinster |
| Year: | 1997 |
| Matches: | 11 |
| Date: | 12 January — 9 March |
| Num Teams: | 12 |
| Trophy: | O'Byrne Cup |
| Winners: | Offaly |
| Manager: | Tommy Lyons |
| Captain: | Finbarr Cullen |
| Runnersup: | Wexford |
| Runnerupmanager: | Cyril Hughes |
| Ordinal: | 5 |
| Previous: | 1996 |
| Next: | 1998 |
The 1997 O'Byrne Cup was a Gaelic football competition played by the county teams of Leinster GAA.
The tournament was a straight knockout, with 12 teams.
Offaly were the winners, defeating Wexford in the final at O'Connor Park.