Algeria competed at the 2011 World Aquatics Championships in Shanghai, China between July 16 and 31, 2011.
Algeria qualified 2 swimmers.[1]
| Athlete | Event | Heats | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Nabil Kebbab | Men's 50m Freestyle | DNS | Did not start | ||||
| Men's 100m Freestyle | 49.85 | 33 | Did not advance | ||||
| Men's 50m Breaststroke | 28.25 | 26 | Did not advance | ||||
| Men's 100m Breaststroke | 1:04.50 | 61 | Did not advance | ||||
| Sofiane Daid | Men's 200m Breaststroke | 2:18.32 | 37 | Did not advance | |||