1989 Cork Junior A Hurling Championship
The 1989 Cork Junior A Hurling Championship was the 92nd staging of the Cork Junior A Hurling Championship since its establishment by the Cork County Board. The championship ran from 24 September to 14 November 1989.
The final was played on 14 November 1989 at the Cloughduv Grounds, between Clyda Rovers and Ballinascarthy, in what was their first ever meeting in the final. Clyda Rovers won the match, a replay, by 0-11 to 1-07 to claim their first ever championship title.
Ballinascarthy's Colman Murphy was the championship's top scorer with 0-20.
Qualification
Championship statistics
Top scorers
;Overall| Rank | Player | County | Tally | Total | Matches | Average |
| 1 | Colman Murphy | Ballinascarthy | 0-20 | 20 | 4 | 5.00 |
| 2 | Liam Deasy | Ballinascarthy | 5-01 | 16 | 4 | 4.00 |
| 3 | Timmy O'Callaghan | Clyda Rovers | 0-15 | 15 | 4 | 3.75 |
| 4 | Paudie Curtin | Clyda Rovers | 3-02 | 11 | 4 | 2.75 |
| 4 | Seánie Noonan | Aghabullogue | 1-08 | 11 | 1 | 11.00 |
| 6 | Jerry Ryan | Ballinascarthy | 1-07 | 10 | 4 | 2.50 |
| 6 | Martin O'Hanlon | Clyda Rovers | 0-10 | 10 | 4 | 2.50 |
| 8 | Dan O'Sullivan | Kilbrin | 0-09 | 9 | 2 | 4.50 |
| 9 | John Sheehan | Kilbrin | 2-02 | 8 | 2 | 4.00 |
| 9 | John Kingston | Ballinascarthy | 2-02 | 8 | 4 | 2.00 |
;In a single game
| Rank | Player | Club | Tally | Total | Opposition |
| 1 | Seánie Noonan | Aghabullogue | 1-08 | 11 | Ballinascarthy |
| 2 | Liam Deasy | Ballinascarthy | 2-01 | 7 | Aghabullogue |
| 2 | Stephen O'Reilly | Kilbrin | 2-01 | 7 | Na Piarsaigh |
| 2 | John Sheehan | Kilbrin | 2-01 | 7 | Na Piarsaigh |
| 2 | Colman Murphy | Ballinascarthy | 0-07 | 7 | Aghabullogue |
| 6 | Paudie Curtin | Clyda Rovers | 2-00 | 6 | Kilbrin |
| 6 | Jerry Ryan | Ballinascarthy | 1-03 | 6 | Aghabullogue |
| 6 | Robert Dalton | Na Piarsaigh | 1-03 | 6 | Kilbrin |
| 6 | Colman Murphy | Ballinascarthy | 0-06 | 6 | Clyda Rovers |
| 10 | Timmy O'Callaghan | Clyda Rovers | 0-05 | 5 | Midleton |
| 10 | Robbie Fitzgerald | Midleton | 0-05 | 5 | Clyda Rovers |
| 10 | Dan O'Sullivan | Kilbrin | 0-05 | 5 | Clyda Rovers |
| 10 | Timmy O'Callaghan | Clyda Rovers | 0-05 | 5 | Ballinascarthy |