1991 Cork Junior A Football Championship

The 1991 Cork Junior A Football Championship was the 93rd staging of the Cork Junior A Football Championship since its establishment by Cork County Board in 1895. The championship ran from 29 September to 10 November 1991.

The final was played on 10 November 1991 at the Kanturk Grounds, between Knocknagree and Deel Rovers, in what was their first ever meeting in the final. Knocknagree won the match by 2–07 to 1–08 to claim their second championship title overall and a first title in seven years.