1998 Cork Junior A Football Championship

The 1998 Cork Junior A Football Championship was the 100th staging of the Cork Junior A Football Championship since its establishment by Cork County Board in 1895. The championship ran from 10 October to 6 December 1998.

The final was played on 6 December 1998 at Páirc Uí Chaoimh in Cork, between newmarket and Killavullen, in what was their first ever meeting in the final. Newmarket won the match by 0–09 to 0–08 to claim their second championship title overall and a first title in 28 years.