Records
Prior to this competition, the existing world and championship records were as follows. No new records were set during this competition.Results
Heats
Final
The final was held at 20:41.References
{{DEFAULTSORT:2012 FINA World Swimming Championships (25 m) - Women's 4 x 100 metre freestyle relay Freestyle relay 4x100 metre, women's World Short Course Swimming Championships 2012 in women's swimming