| Games: | World Aquatics Championships |
| Nf: | ISL |
| Nfname: | Sundsamband Íslands |
| Year: | 2019 |
| Flagcaption: | Flag of Iceland |
| Location: | Gwangju, South Korea |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Appearances: | auto |
Iceland competed at the 2019 World Aquatics Championships in Gwangju, South Korea from 12 to 28 July.
See main article: Swimming at the 2019 World Aquatics Championships.
Iceland entered four swimmers.[1]
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| align=left rowspan=3 | Anton Sveinn McKee | 50 m breaststroke | 27.46 | 20 | did not advance | |||
| 100 m breaststroke | 1:00.32 | 24 | did not advance | |||||
| 200 m breaststroke | 2:10.32 | 16 Q | 2:10.68 | 16 | did not advance | |||
| align=left rowspan=2 | Kristinn Þórarinsson | 50 m backstroke | 26.42 | 44 | did not advance | |||
| 100 m backstroke | 56.99 | 46 | did not advance | |||||
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| align=left rowspan=2 | Eygló Ósk Gústafsdóttir | 50 m backstroke | 29.82 | 29 | did not advance | |||
| 100 m backstroke | 1:03.46 | 42 | did not advance | |||||
| align=left rowspan=2 | Snæfríður Jórunnardóttir | 100 m freestyle | 57.34 | 43 | did not advance | |||
| 200 m freestyle | 2:07.43 | 41 | did not advance | |||||