# Ireland at the 2019 World Aquatics Championships

Ireland competed at the 2019 World Aquatics Championships in Gwangju, South Korea from 12 to 28 July.

## Diving

Ireland entered three divers.

### Men

| Athlete | Event | Preliminaries | Preliminaries | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank | Points | Rank |
| Oliver Dingley | 1 m springboard | 314.40 | 27 | — | — | Did not advance | Did not advance |
| Oliver Dingley | 3 m springboard | 417.95 | 10 Q | 358.95 | 18 | Did not advance | Did not advance |

### Women

| Athlete | Event | Preliminaries | Preliminaries | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank | Points | Rank |
| Clare Cryan | 1 m springboard | 240.70 | 5 Q | — | — | 237.05 | 11 |
| Clare Cryan | 3 m springboard | 250.25 | 23 | Did not advance | Did not advance | Did not advance | Did not advance |
| Tanya Watson | 10 m platform | 237.00 | 29 | Did not advance | Did not advance | Did not advance | Did not advance |

### Mixed

| Athlete | Event | Final | Final |
| Athlete | Event | Points | Rank |
| Oliver Dingley Clare Cryan | Synchronized 3 m springboard | 266.49 | 12 |

## Swimming

Ireland entered 10 swimmers.

### Men

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Curtis Coulter | 100 m freestyle | 50.86 | 61 | Did not advance | Did not advance | Did not advance | Did not advance |
| Conor Ferguson | 50 m backstroke | 25.60 | 28 | Did not advance | Did not advance | Did not advance | Did not advance |
| Conor Ferguson | 200 m backstroke | 2:02.37 | 33 | Did not advance | Did not advance | Did not advance | Did not advance |
| Darragh Greene | 50 m breaststroke | 26.94 | 8 Q | 27.14 | 10 | Did not advance | Did not advance |
| Darragh Greene | 100 m breaststroke | 59.82 | 17 | Did not advance | Did not advance | Did not advance | Did not advance |
| Darragh Greene | 200 m breaststroke | 2:10.61 | 17 | Did not advance | Did not advance | Did not advance | Did not advance |
| Brendan Hyland | 200 m butterfly | 1:57.09 | 14 Q | 1:56.55 | 11 | Did not advance | Did not advance |
| Brendan Hyland | 200 m individual medley | DNS | DNS | Did not advance | Did not advance | Did not advance | Did not advance |
| Shane Ryan | 50 m backstroke | 25.10 | 11 Q | WD | WD | Did not advance | Did not advance |
| Shane Ryan | 100 m backstroke | 54.24 | 21 | Did not advance | Did not advance | Did not advance | Did not advance |
| Jordan Sloan | 200 m freestyle | 1:48.60 | =27 | Did not advance | Did not advance | Did not advance | Did not advance |
| Shane Ryan Robert Powell Jordan Sloan Jack McMillan | 4×100 m freestyle relay | 3:17.38 | 20 | — | — | Did not advance | Did not advance |
| Jack McMillan Robert Powell Jordan Sloan Brendan Hyland | 4×200 m freestyle relay | 7:13.91 NR | 16 | — | — | Did not advance | Did not advance |
| Shane Ryan Darragh Greene Brendan Hyland Jordan Sloan | 4×100 m medley relay | 3:35.86 NR | 14 | — | — | Did not advance | Did not advance |

### Women

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Niamh Coyne | 50 m breaststroke | 32.12 | 30 | Did not advance | Did not advance | Did not advance | Did not advance |
| Niamh Coyne | 100 m breaststroke | 1:10.16 | =33 | Did not advance | Did not advance | Did not advance | Did not advance |
| Niamh Coyne | 200 m breaststroke | DNS | DNS | Did not advance | Did not advance | Did not advance | Did not advance |
| Ellen Walshe | 100 m butterfly | 1:00.85 | 35 | Did not advance | Did not advance | Did not advance | Did not advance |

### Mixed

| Athlete | Event | Heat | Heat | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank |
| Conor Ferguson Niamh Coyne Ellen Walshe Robert Powell | 4×100 m medley relay | 3:53.69 | 19 | Did not advance | Did not advance |