Irish Junior National Championships - Dublin - May 23-30 2003
Preliminaries
| 2003-05-23 | 64kg | Keith Boyle | Anthony Fitzgerald | 18:8 |
Quarterfinals
| 2003-05-23 | 54kg | John Cooley | Mark O'Brien | 24:12 |
| 2003-05-23 | 54kg | David Joyce | Brendan Price | AB 3 |
| 2003-05-23 | 54kg | Ciaran Bates | Ryan McClure | 16:3 |
| 2003-05-23 | 57kg | Niall Murray | Michael Harvey | 15:1 |
| 2003-05-23 | 60kg | Spencer Hart | Mark McTiernan | 17:8 |
| 2003-05-23 | 60kg | John Quinn | Dominic McNamara | RSC 3 |
| 2003-05-23 | 60kg | David Joyce | William Mitchell | 14:10 |
| 2003-05-23 | 64kg | John Joe McDonagh | Stephen Lagan | 18:0 |
| 2003-05-23 | 64kg | David Nevin | Barry Muldoon | RSCO 2 |
| 2003-05-23 | 64kg | Keith Boyle | Declan Conroy | RSC 4 |
| 2003-05-23 | 64kg | Desmond Toman | William McLaughlin | 13:12 |
| 2003-05-23 | 69kg | Michael Gallagher | James Gruddy | RSC 2 |
| 2003-05-23 | 69kg | Shane Murtagh | Denis Hogan | 15:4 |
| 2003-05-23 | 69kg | Stephen Davitt | Conor O'Hanlon | +21:21 |
| 2003-05-23 | 69kg | Clyde Moran | Bernie Ward | RSCH 3 |
| 2003-05-23 | 81kg | Martin Healy | Jonathan Walsh | AB 3 |
Semifinals
| 2003-05-24 | 48kg | Ross Hickey | Martin Brady | 20:7 |
| 2003-05-24 | 48kg | Derek Thorpe | Francis Campbell | +5:5 |
| 2003-05-24 | 51kg | Barry McCafferty | Patrick McCartan | 23:15 |
| 2003-05-24 | 54kg | Eric Donovan | John Cooley | RSC 2 |
| 2003-05-24 | 54kg | David Joyce | Ciaran Bates | 21:3 |
| 2003-05-24 | 57kg | Dean Murphy | Alan Siberry | AB 1 |
| 2003-05-24 | 57kg | Eamon Touhey | Niall Murray | RSCO 3 |
| 2003-05-24 | 60kg | Thomas Dwyer | Spencer Hart | 20:6 |
| 2003-05-24 | 60kg | John Quinn | David Joyce | 12:9 |
| 2003-05-24 | 64kg | John Joe McDonagh | David Nevin | 11:5 |
| 2003-05-24 | 64kg | Desmond Toman | Keith Boyle | 10:8 |
| 2003-05-24 | 69kg | Michael Gallagher | Shane Murtagh | 5:3 |
| 2003-05-24 | 69kg | Clyde Moran | Stephen Davitt | 23:5 |
| 2003-05-24 | 75kg | Brian Fitzpatrick | John Flannery | 17:3 |
| 2003-05-24 | 75kg | Peter Lee | Gary Hickey | RSC 3 |
| 2003-05-24 | 81kg | Darren O'Neill | John Sweeney | 16:10 |
| 2003-05-24 | 81kg | John Cummins | Martin Healy | KO 2 |
| 2003-05-24 | 91kg | Philip Kearns | Michael Stokes | RSC 4 |
Finals
| 2003-05-30 | 48kg | Ross Hickey | Derek Thorpe | 19:7 |
| 2003-05-30 | 51kg | T.J.Doheny | Barry McCafferty | 11:9 |
| 2003-05-30 | 54kg | Eric Donovan | David Joyce | WO. |
| 2003-05-30 | 57kg | Dean Murphy | Eamon Touhey | 22:11 |
| 2003-05-30 | 60kg | John Quinn | Thomas Dwyer | 10:6 |
| 2003-05-30 | 64kg | John Joe McDonagh | Desmond Toman | 11:6 |
| 2003-05-30 | 69kg | Michael Gallagher | Clyde Moran | 13:0 |
| 2003-05-30 | 75kg | Peter Lee | Brian Fitzpatrick | 22:11 |
| 2003-05-30 | 81kg | Darren O'Neill | John Cummins | RSC 2 |
| 2003-05-30 | 91kg | Philip Kearns | Mark Kelly | AB 4 |
| 2003-05-30 | +91kg | Scott Belshaw | Gerard Barrett | RSC 3 |
Box-Offs
| 2003-05-30 | 54kg | Ciaran Bates | Mark O'Brien | 19:7 |