| Games: | World Aquatics Championships |
| Nf: | LIB |
| Nfname: | Federation Libanaise de Natation |
| Year: | 2017 |
| Flagcaption: | Flag of Lebanon |
| Location: | Budapest, Hungary |
| Competitors: | 4 |
| Sports: | 1 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Appearances: | auto |
Lebanon 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. Lebanon 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 | Anthony Barbar | Men's 50 m freestyle | 23.76 | =71 | did not advance | |||
| Men's 50 m butterfly | 25.17 | 50 | did not advance | |||||
| align=left rowspan=2 | Anthony Souaiby | Men's 100 m freestyle | 53.62 | 78 | did not advance | |||
| Men's 50 m breaststroke | 30.84 | 65 | did not advance | |||||
| align=left rowspan=2 | Gabriella Doueihy | Women's 400 m freestyle | 4:25.34 | 30 | did not advance | |||
| Women's 800 m freestyle | 9:19.43 | 36 | did not advance | |||||
| align=left rowspan=2 | Jennifer Rizkallah | Women's 50 m backstroke | 31.65 | 54 | did not advance | |||
| Women's 100 m backstroke | 1:10.36 | 52 | did not advance | |||||