Swimming at the 2011 World Aquatics Championships – Women's 50 metre backstroke

The women's 50 metre backstroke competition of the swimming events at the 2011 World Aquatics Championships took place on July 27 with the heats and the semifinals and July 28 with the final.

Records
Prior to the competition, the existing world and championship records were as follows.

Heats
57 swimmers participated in 8 heats.

Semifinals
The semifinals were held at 18:13.

Final
The final was held at 19:17.