| Games: | World Aquatics Championships |
| Nf: | QAT |
| Nfname: | Qatar Swimming Association |
| Year: | 2019 |
| Flagcaption: | Flag of Qatar |
| Location: | Gwangju, South Korea |
| Competitors: | 3 |
| Sports: | 1 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Appearances: | auto |
| App Begin Year: | 2001 |
Qatar 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.
Qatar entered three swimmers.[1]
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| align=left rowspan=2 | Yacob Al-Khulaifi | 200 m freestyle | 1:56.57 | 60 | did not advance | |||
| 100 m butterfly | 56.62 | 59 | did not advance | |||||
| align=left rowspan=2 | Firass Saidi | 50 m freestyle | 25.20 | 96 | did not advance | |||
| 100 m freestyle | 55.60 | 99 | did not advance | |||||
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| align=left rowspan=2 | Nada Arkaji | 50 m freestyle | 31.57 | 90 | did not advance | |||
| 100 m freestyle | 1:12.91 | 88 | did not advance | |||||