Bangladesh competed at the 2011 World Aquatics Championships in Shanghai, China between July 16 and 31, 2011.
Bangladesh qualified 2 swimmers.[1]
| Athlete | Event | Heats | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Mahfizur Rahman | Men's 50m Freestyle | 24.82 | 63 | Did not advance | |||
| Men's 100m Freestyle | 54.18 | 71 | Did not advance | ||||
| Shajahan Ali | Men's 50m Breaststroke | 30.88 | 40 | Did not advance | |||
| Men's 100m Breaststroke | 1:10.22 | 75 | Did not advance | ||||