| Tournament details | |
|---|---|
| Province | Leinster |
| Trophy | O'Byrne Cup |
| Date | 3–20 January 2024 |
| Teams | 11 |
| Defending champions | Longford |
| Winners | |
| Champions | Longford (5th win) |
| Manager | Paddy Christie |
| Captain | Patrick Fox |
| Runners-up | |
| Runners-up | Dublin |
| Manager | Dessie Farrell |
| Other | |
| Matches played | 10 (Cup) 4 (Shield) |
The 2024 O'Byrne Cup, known for sponsorship reasons as the Dioralyte O'Byrne Cup, was a Gaelic football tournament played by eleven county teams of Leinster GAA in January 2024; Kilkenny did not take part. Longford retained the trophy after beating Dublin in the final.[1][2][3]
Teams defeated in their first match played in a shield tournament, which was won by Louth.[4]