- Matt Grevers
- 00:48.92 minute(s):second(s)
- United States (Indianapolis)
The fastest short course 100 metres backstroke swim is 48.92 seconds and was achieved by Matt Grevers (USA) in Indianapolis, Indiana, USA, on 12 December 2015.
Grevers broke the record during the Duel in the Pool a competition between Europe All-Stars and the USA Swim Team.