| Games: | World Aquatics Championships |
| Nf: | INA |
| Nfname: | Indonesian Swimming Federation |
| Year: | 2019 |
| Flagcaption: | Flag of Indonesia |
| Location: | Gwangju, South Korea |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Appearances: | auto |
Indonesia competed at the 2019 World Aquatics Championships in Gwangju, South Korea from 12 to 28 July.
See main article: Open water swimming at the 2019 World Aquatics Championships. Indonesia qualified one male open water swimmer.[1]
See main article: Swimming at the 2019 World Aquatics Championships.
Indonesia entered eight swimmers.[2]
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| Aflah Prawira | 200 m freestyle | 1:51.91 | 47 | Did not advance | ||||
| 400 m freestyle | 3:59.98 | 38 | Did not advance | |||||
| 800 m freestyle | 8:06.58 | 25 | Did not advance | |||||
| 1500 m freestyle | 8:06.58 | 25 | Did not advance | |||||
| 400 m individual medley | 4:26.49 | 26 | Did not advance | |||||
| Triady Fauzi Sidiq | 50 m freestyle | 23.36 | 59 | Did not advance | ||||
| 100 m freestyle | 51.80 | 70 | Did not advance | |||||
| 200 m individual medley | 2:12.09 | 49 | Did not advance | |||||
| I Gede Siman Sudartawa | 50 m backstroke | 26.00 | 41 | Did not advance | ||||
| Gagarin Nathaniel | 50 m breaststroke | 28.97 | 48 | Did not advance | ||||
| align=left rowspan=2 | Glenn Victor Sutanto | 50 m butterfly | 24.84 | 49 | Did not advance | |||
| 100 m butterfly | 54.57 | 44 | Did not advance | |||||
| Athlete | Event | Heat | Semifinal | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Anandia Evato | 100 m breaststroke | 1:12.96 | 39 | Did not advance | |||
| Adinda Kirana | 200 m butterfly | 2:20.07 | 29 | Did not advance | |||
| Azzahra Permatahani | 400 m individual medley | 1:12.96 | 39 | Did not advance | |||