The women's 100 metre backstroke event at the 2024 World Aquatics Swimming Championships (25 m) was held from 10 to 11 December 2024 at the Duna Arena in Budapest, Hungary.
Records.
Prior to the competition, the existing world and championship records were as follows.
The following record was established during the competition:
Results.
Heats.
The heats were started on 10 December at 9:32.
Semifinals.
The semifinals were started on 10 December at 18:24.
Final.
The final was held on 11 December at 17:32.