1990 Cork Junior A Hurling Championship
The 1990 Cork Junior A Hurling Championship was the 93rd staging of the Cork Junior A Hurling Championship since its establishment by the Cork County Board. The draw for the opening fixtures took place on 17 December 1989. The championship began on 7 October 1990 and ended on 18 November 1990.
The final was played on 18 November 1990 at Páirc Uí Chaoimh in Cork between Midleton and Ballincollig, in what was their first ever meeting in the final. Midleton won the match by 1–15 to 1–09 to claim their fourth championship title overall and a first title in [1984 Cork (city)|Cork Junior A Hurling Championship|six years].
Midleton's Kevin McCarthy was the championship's top scorer with 1-20.
Qualification
Results
Quarter-finals
Championship statistics
Top scorers
;Overall| Rank | Player | Club | Tally | Total | Matches | Average |
| 1 | Kevin McCarthy | Midleton | 1-20 | 23 | 3 | 7.66 |
| 2 | Podsie O'Mahony | Ballincollig | 0-17 | 17 | 3 | 5.66 |
| 3 | James Aherne | Fermoy | 1-09 | 12 | 3 | 4.00 |
| 4 | Anthony Harrington | Carrigaline | 0-11 | 11 | 2 | 5.50 |
| 5 | Michael O'Mahony | Midleton | 0-09 | 9 | 3 | 3.00 |
;In a single game
| Rank | Player | Club | Tally | Total | Opposition |
| 1 | Kevin McCarthy | Midleton | 1-07 | 10 | Bandon |
| 2 | Podsie O'Mahony | Ballincollig | 0-09 | 9 | Meelin |
| 3 | Pádraig Crowley | Bandon | 1-05 | 8 | Midleton |
| 4 | James Aherne | Fermoy | 1-04 | 7 | Carrigaline |
| 4 | Kevin McCarthy | Midleton | 0-07 | 7 | Fermoy |
| 6 | Anthony Harrington | Carrigaline | 0-06 | 6 | Fermoy |
| 6 | Kevin McCarthy | Midleton | 0-06 | 6 | Ballincollig |
| 8 | Declan Fitzgerald | Carrigaline | 1-02 | 5 | Fermoy |
| 8 | Tomás O'Mahony | Meelin | 1-02 | 5 | Ballincollig |
| 8 | James Aherne | Fermoy | 0-05 | 5 | Carrigaline |
| 8 | Anthony Harrington | Carrigaline | 0-05 | 5 | Fermoy |
| 8 | Podsie O'Mahony | Ballincollig | 0-05 | 5 | Midleton |