Australia at the 2019 World Aquatics Championships
Australia competed at the 2019 World Aquatics Championships in Gwangju, South Korea from 12 to 28 July.
Medalists
Artistic swimming
Australia's artistic swimming team consisted of 14 athletes.;Women
;Mixed
Legend: = Reserve Athlete
Diving
Australia entered 13 divers.;Men
;Women
;Mixed
High diving
Australia qualified two female high divers.| Athlete | Event | Points | Rank |
| Rhiannan Iffland | Women's high diving | 298.05 | |
| Xantheia Pennisi | Women's high diving | 248.60 | 6 |
Open water swimming
Australia qualified four male and four female open water swimmers.;Men
| Athlete | Event | Time | Rank |
| Bailey Armstrong | Men's 5 km | 53:34.8 | 7 |
| Bailey Armstrong | Men's 25 km | 5:04:10.7 | 18 |
| Hayden Cotter | Men's 5 km | 53:35.5 | 9 |
| Kai Edwards | Men's 10 km | 1:48:16.2 | 14 |
| Kai Edwards | Men's 25 km | 4:51:17.2 | 5 |
| Nicholas Sloman | Men's 10 km | 1:49:22.7 | 21 |
;Women
;Mixed
| Athlete | Event | Time | Rank |
| Hayden Cotter Chelsea Gubecka Kareena Lee Nicholas Sloman | Team | 54:36.8 | 5 |
Swimming
Australia entered 27 swimmers.;Men
;Women
;Mixed
Legend: = Swimmers who participated in the heat only.
Water polo
Men's tournament
;Team roster- Joel Dennerley
- Richard Campbell
- George Ford
- Joe Kayes
- Nathan Power
- Lachlan Edwards
- Aidan Roach
- Aaron Younger
- Andrew Ford
- Timothy Putt
- Rhys Howden
- Blake Edwards
- Anthony Hrysanthos
- Coach: Elvis Fatović
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;Playoffs
;Quarterfinal
;5th–8th place semifinals
;Fifth place game
Women's tournament
;Team roster- Gabriella Palm
- Keesja Gofers
- Hannah Buckling
- Bronte Halligan
- Iso Bishop
- Bronwen Knox
- Rowie Webster
- Amy Ridge
- Zoe Arancini
- Lena Mihailovic
- Elle Armit
- Madeleine Steere
- Lea Yanitsas
- Coach: Predrag Mihailović
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;Playoffs
;Quarterfinals
;Semifinals
;Third place game