Cork City Junior A Hurling Championship
| Cork City Junior A Hurling Championship | |
|---|---|
| Irish | Craobh Iomána Sóisear A Cathair Chorcaí |
| Code | Hurling |
| Founded | 1926 |
| Region | Seandún (GAA) |
| No. of teams | 8 |
| Title holders | Whitechurch (2nd title) |
| Most titles | Glen Rovers (17 titles) |
| Sponsors | AOS Security |
| Official website | Seandún GAA |
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 1–13 to 0–15 in the 2025 final replay.