| Name | Event | Round | Time | |
|---|---|---|---|---|
| 1 | Daniel Wiffen | 1500 L Free | Finals | 14:39.63 |
| 2 | Daniel Wiffen | 1500 L Free | Prelims | 14:40.34 |
| 3 | Daniel Wiffen | 800 L Free | Finals | 7:38.19 |
| 4 | Daniel Wiffen | 800 L Free | Prelims | 7:41.53 |
| 5 | Thomas Fannon | 50 L Free | Semifinals | 21.74 |
| 6 | Thomas Fannon | 50 L Free | Prelims | 21.79 |
| 7 | Conor Ferguson | 100 L Back | Prelims | 54.88 |
| Name | Event | Round | Time | |
|---|---|---|---|---|
| 1 | Swim Ireland | 400 L Medley Relay | Prelims | |
| Name | Gold | Silver | Bronze | Score | FINA | |
|---|---|---|---|---|---|---|
| 1 | Daniel Wiffen | 1 | 0 | 1 | 15 | 966.0 |
| 2 | Thomas Fannon | 0 | 0 | 0 | – | 890.0 |
