Mauritius competed at the 2011 World Aquatics Championships in Shanghai, China between July 16 and 31, 2011.
Mauritius qualified 3 swimmers.[1]
| Athlete | Event | Heats | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Mathew Marquet | Men's 200m Freestyle | 2:02.41 | 57 | Did not advance | |||
| Athlete | Event | Heats | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Heather Arseth | Women's 200m Freestyle | 2:10.93 | 43 | Did not advance | |||
| Olivia de Maroussem | Women's 200m Freestyle | 2:12.28 | 44 | Did not advance | |||