The 2023 North Cork Junior A Hurling Championship was the 99th staging of the North Cork Junior A Hurling Championship since its establishment by the North Cork Board in 1925. The draw for the group stage placings took place on 1 February 2023. The championship ran from 4 August to 14 October 2023.
Kilshannig entered the championship as the defending champions.
The final was played on 14 October 2023 at the Castletownroche Grounds, between Harbour Rovers and Kilshannig, in what was their second meeting in the final overall and a first meeting in three years. Harbour Rovers won the match by 1âÂÂ16 to 0âÂÂ16 to claim their fourth championship title overall and a first title in three years.
Stephen Condon was the championship's top scorer with 2-57.