The Women's 100 Breaststroke at the 2010 FINA World Swimming Championships (25m) was swum 17–18 December in Dubai, United Arab Emirates. Preliminary heats and semifinals were on 17 December,[1][2] the final on 18 December.[3]
55 swimmers swam the race.[1] At the start of the event, the existing World (WR) and Championship records (CR) were: