2003 Cork Junior A Football Championship
The 2003 Cork Junior A Football Championship was the 105th staging of the Cork Junior A Football Championship since its establishment by the Cork County Board. The draw for the opening fixtures took place on 8 December 2002. The championship ran from 12 October to 30 November 2003.
The final was played on 30 November 2003 at Páirc Uí Chaoimh in Cork, between Carbery Rangers and Cill na Martra, in what was their first ever meeting in the final. Carbery Rangers won the match by 0–10 to 0–05 to claim their first ever championship title.
Cill na Martra's Richard Hoare was the championship's top scorer with 1–16.
Qualification
Championship statistics
Top scorers
;Overall| Rank | Player | Club | Tally | Total | Matches | Average |
| 1 | Richard Hoare | Cill an Martra | 1–16 | 19 | 3 | 6.33 |
| 2 | John Hayes | Carbery Rangers | 0–14 | 14 | 3 | 4.66 |
| 3 | Philip Lonergan | Fermoy | 1–06 | 9 | 2 | 4.50 |
| 3 | Barry Hegarty | Mayfield | 0–09 | 9 | 2 | 4.50 |
| 5 | Declan Hayes | Carbery Rangers | 1–03 | 6 | 3 | 2.00 |
| 5 | Johnny Murphy | Carbery Rangers | 0–06 | 6 | 3 | 2.00 |
;In a single game
| Rank | Player | Club | Tally | Total | Opposition |
| 1 | Richard Hoare | Cill an Martra | 1–07 | 10 | Garnish |
| 2 | Richard Hoare | Cill an Martra | 0–07 | 7 | Mayfield |
| 3 | Ken Ashman | Ballygarvan | 1–02 | 5 | Carbery Rangers |
| 3 | Philip Lonergan | Fermoy | 1–02 | 5 | Erin's Own |
| 3 | Barry Hegarty | Mayfield | 0–05 | 5 | Millstreet |
| 3 | John Hayes | Carbery Rangers | 0–05 | 5 | Ballygarvan |
| 3 | John Hayes | Carbery Rangers | 0–05 | 5 | Cill na Martra |
| 8 | Kevin O'Sullivan | Cill na Martra | 1–01 | 4 | Mayfield |
| 8 | Denis Kiely | Millstreet | 0–04 | 4 | Mayfield |
| 8 | Barry Hegarty | Mayfield | 0–04 | 4 | Cill na Martra |
| 8 | John Hayes | Carbery Rangers | 0–04 | 4 | Fermoy |
| 8 | Philip Lonergan | Fermoy | 1–02 | 5 | Carbery Rangers |