Cyprus competed at the 2011 World Aquatics Championships in Shanghai, China between July 16 and 31, 2011.
Cyprus qualified 3 swimmers.[1]
| Athlete | Event | Heats | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Iacovos Hadjiconstantinou | Men's 400m Freestyle | 4:13.53 | 43 | Did not advance | |||
| Men's 800m Freestyle | 8:38.93 | 49 | Did not advance | ||||
| Men's 1500m Freestyle | 17:02.94 | 26 | Did not advance | ||||
| Athlete | Event | Heats | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Anna Stylianou | Women's 200m Freestyle | 2:01.62 | 33 | Did not advance | |||
| Women's 400m Freestyle | 4:15.46 | 21 | Did not advance | ||||
| Anastasia Christoforou | Women's 50m Breaststroke | 32.69 | 22 | Did not advance | |||
| Women's 100m Breaststroke | 1:13.15 | 34 | Did not advance | ||||