| Games: | World Aquatics Championships |
| Nf: | SRI |
| Nfname: | Sri Lanka Aquatics Sports Union |
| Year: | 2011 |
| Flagcaption: | Flag of Sri Lanka |
| Location: | Shanghai, China |
| Competitors: | 3 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Appearances: | auto |
| See also: | FINA Independent Athletes (2015) |
Sri Lanka competed at the 2011 World Aquatics Championships in Shanghai, China. Sri Lanka sent 3 athletes to these championships.
See main article: Swimming at the 2011 World Aquatics Championships. For the first time ever qualification standards were put in place, which meant smaller countries such as Sri Lanka could only send wild cards (2 male and 1 female). The three swimmers were selected after selection trials at the Police Pool in Colombo in April 2011.[1]
| Athlete | Event | Heats | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Heshan Unamboowe | 50 m freestyle | 24.64 | 57 | align=center colspan=4 | did not advance | ||
| 100 m backstroke | 57.95 | 43 | align=center colspan=4 | did not advance | |||
| Matthew Abeysinghe | 200 m freestyle | 1:55.33 | 48 | align=center colspan="4" | did not advance | ||
| 400 m freestyle | 4:09.45 | 42 | align=center colspan="2" | did not advance | |||
| Athlete | Event | Heats | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Reshika Udugampola | 100 m freestyle | 1:04.23 | 63 | align=center colspan=4 | did not advance | ||
| 50 m butterfly | 31.15 | 42 | align=center colspan=4 | did not advance | |||