| Name | Event | Round | Time | |
|---|---|---|---|---|
| 1 | Darragh Greene | 200 L Breast | Prelims | 2:10.61 |
| 2 | Darragh Greene | 50 L Breast | Prelims | 26.94 |
| 3 | Shane Ryan | 50 L Back | Prelims | 25.10 |
| 4 | Brendan Hyland | 200 L Fly | Semifinals | 1:56.55 |
| 5 | Darragh Greene | 50 L Breast | Semifinals | 27.14 |
| 6 | Shane Ryan | 100 L Back | Prelims | 54.24 |
| 7 | Darragh Greene | 100 L Breast | Prelims | 59.82 |
| 8 | Shane Ryan | 100 L Back | Prelims | 54.39 |
| 9 | Brendan Hyland | 200 L Fly | Prelims | 1:57.09 |
| 10 | Shane Ryan | 100 L Free | Prelims | 49.40 |
| Name | Event | Round | Time | |
|---|---|---|---|---|
| 1 | Swim Ireland | 800 L Free Relay | Prelims | |
| 2 | Swim Ireland | 400 L Medley Relay | Prelims | |
| 3 | Swim Ireland | 400 L Free Relay | Prelims | |
| Name | Gold | Silver | Bronze | Score | FINA | |
|---|---|---|---|---|---|---|
| 1 | Darragh Greene | 0 | 0 | 0 | – | 892.3 |
| 2 | Brendan Hyland | 0 | 0 | 0 | – | 876.0 |
| 3 | Shane Ryan | 0 | 0 | 0 | – | 868.8 |
| 4 | Jordan Sloan | 0 | 0 | 0 | – | 829.0 |
| 5 | Conor Ferguson | 0 | 0 | 0 | – | 816.3 |
