| Games: | World Aquatics Championships |
| Nf: | MHL |
| Nfname: | Marshall Islands Swimming Federation |
| Year: | 2019 |
| Flagcaption: | Flag of the Marshall Islands |
| Location: | Gwangju, South Korea |
| Competitors: | 3 |
| Sports: | 1 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Appearances: | auto |
| App Begin Year: | 2005 |
Marshall Islands 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.
Marshall Islands entered three swimmers.[1]
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| align=left rowspan=2 | Phillip Kinono | 50 m freestyle | 29.25 | 124 | did not advance | |||
| 50 m backstroke | 41.27 | 74 | did not advance | |||||
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| align=left rowspan=2 | Colleen Furgeson | 50 m backstroke | 33.28 | 38 | did not advance | |||
| 100 m backstroke | 1:13.64 | 58 | did not advance | |||||
| align=left rowspan=2 | Ann-Marie Hepler | 50 m freestyle | 29.63 | 78 | did not advance | |||
| 50 m butterfly | 30.77 | 50 | did not advance | |||||