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] The eleven teams are drawn to play in a knockout system, with six teams playing in a preliminary round and the other five receiving a bye to the quarter-finals.
This structure means that every team, except for Dublin, is guaranteed at least two games.