Great Britain at the 2019 World Aquatics Championships
Great Britain competed at the 2019 World Aquatics Championships in Gwangju, South Korea from 12 to 28 July.
Artistic swimming
Great Britain's artistic swimming team consisted of 2 athletes.;Women
Diving
Great Britain entered 13 divers.;Men
;Women
;Mixed
High diving
Great Britain qualified three male and one female high divers.;Men
| Athlete | Event | Points | Rank |
| Blake Aldridge | Men's high diving | 216.25 | 20 |
| Gary Hunt | Men's high diving | 442.20 | |
| Owen Weymouth | Men's high diving | 232.40 | 16 |
;Women
| Athlete | Event | Points | Rank |
| Jessica Macaulay | Women's high diving | 295.40 |
Open water swimming
Great Britain qualified three male and three female open water swimmers.;Men
| Athlete | Event | Time | Rank |
| Jack Burnell | Men's 10 km | 1:48:09.9 | 12 |
| Gordon Mason | Men's 5 km | 54:01.0 | 42 |
| Tobias Robinson | Men's 10 km | 1:48:23.5 | 18 |
;Women
| Athlete | Event | Time | Rank |
| Alice Dearing | Women's 10 km | 1:55:05.9 | 17 |
| Danielle Huskisson | Women's 10 km | 1:55:31.5 | 25 |
| Maisie Macartney | Women's 5 km | 1:01:50.5 | 43 |
;Mixed
| Athlete | Event | Time | Rank |
| Jack Burnell Alice Dearing Danielle Huskisson Tobias Robinson | Team | 55:31.1 | 11 |
Swimming
Great Britain entered 25 swimmers.;Men
;Women
;Mixed
Legend: = Swimmers who participated in the heat only.