Papua New Guinea competed at the 2011 World Aquatics Championships in Shanghai, China between July 16 and 31, 2011.
Papua New Guinea qualified 3 swimmers.[1]
| Athlete | Event | Heats | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Ryan Pini | Men's 100m Freestyle | 50.34 | 41 | Did not advance | |||
| Men's 200m Freestyle | 1:52.23 | 38 | Did not advance | ||||
| Men's 50m Butterfly | 24.26 | 25 | Did not advance | ||||
| Men's 100m Butterfly | 52.69 | 20 | Did not advance | ||||
| Athlete | Event | Heats | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Anna-Liza Mopio | Women's 50m Freestyle | 26.91 | 37 | Did not advance | |||
| Women's 100m Freestyle | 58.86 | 46 | Did not advance | ||||
| Judith Meauri | Women's 100m Freestyle | 1:01.54 | 56 | Did not advance | |||
| Women's 50m Butterfly | 31.56 | 43 | Did not advance | ||||