| Games: | World Aquatics Championships |
| Nf: | SEY |
| Nfname: | Seychelles Swimming Association |
| Year: | 2017 |
| Flagcaption: | Flag of Seychelles |
| Location: | Budapest, Hungary |
| Competitors: | 4 |
| Sports: | 1 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Appearances: | auto |
| App Begin Year: | 1991 |
Seychelles competed at the 2017 World Aquatics Championships in Budapest, Hungary from 14 July to 30 July.
See main article: Swimming at the 2017 World Aquatics Championships. Seychelles has received a Universality invitation from FINA to send a maximum of four swimmers (two men and two women) to the World Championships.[1]
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | |||
| align=left rowspan=2 | Dean Hoffman | Men's 100 m freestyle | 55.15 | 86 | did not advance | |||
| Men's 200 m freestyle | 2:02.62 | 70 | did not advance | |||||
| align=left rowspan=2 | Adam Moncherry | Men's 50 m freestyle | 25.27 | 98 | did not advance | |||
| Men's 50 m butterfly | 27.23 | 68 | did not advance | |||||
| align=left rowspan=2 | Alexus Laird | Women's 50 m freestyle | 27.65 | 54 | did not advance | |||
| Women's 100 m backstroke | 1:07.67 | 49 | did not advance | |||||
| align=left rowspan=2 | Felicity Passon | Women's 100 m freestyle | 57.99 | 42 | did not advance | |||
| Women's 50 m backstroke | 30.32 | 43 | did not advance | |||||
| align=left rowspan=2 | Dean Hoffman Adam Moncherry Alexus Laird Felicity Passon | Mixed 4×100 m freestyle relay | 3:52.27 | 18 | did not advance | |||
| Mixed 4×100 m medley relay | did not advance | |||||||