The Cork City Division Junior A Hurling Championship (known for sponsorship reasons as the AOS Security Cork City Division Junior A Hurling Championship) is an annual club hurling competition organised by the Seandún Board of the Gaelic Athletic Association and contested by the top-ranking junior clubs in Cork, Ireland, deciding the competition winners through a group stage and knockout format.
Introduced in 1926 as the City Junior Championship, it was initially a straight knockout tournament. The competition went through a number of format changes since then, including the introduction of a back-door or second chance for beaten teams.
In its current format, the Cork City Junior A Championship begins with a group stage in late summer. The 10 participating teams are divided into three groups and play each other in a round-robin system. The two top-ranking teams in each group proceed to the knockout phase that culminates with the final. The winner of the Cork City Junior A Championship qualifies for the subsequent Cork Junior A Hurling Championship.
The competition has been won by 17 teams, 12 of which have won it more than once. Glen Rovers are the most successful team in the tournament's history, having won it 17 times. Whitechurch are the title holders, having beaten Na Piarsaigh by 1âÂÂ13 to 0âÂÂ15 in the 2025 final replay.
The 8 teams are divided into two groups of four teams. Over the course of the group stage, each team plays once against the others in the group, resulting in each team being guaranteed at least three games. Two points are awarded for a win, one for a draw and zero for a loss. The teams are ranked in the group stage table by points gained, then scoring difference and then their head-to-head record. The top two teams in each group qualify for the knockout stage.
Semi-finals: The two group winners and two group runners-up contest this round. The winners from these two games advance to the final.
Final: The two semi-final winners contest the final. The winning team are declared champions.
There is no direct relegation in place to the Cork City Junior B Hurling Championship for the following season. Instead, clubs choose to regrade.
The 8 teams competing in the 2026 Cork City Junior A Hurling Championship include: