2012 FINA World Swimming Championships (25 m) – Women's 100 metre butterfly

The women's 100 metre butterfly event at the 11th FINA World Swimming Championships (25m) took place 15 – 16 December 2012 at the Sinan Erdem Dome.

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

No new records were set during this competition.

Final
The final was held at 19:49.