2010 FINA World Swimming Championships (25 m) – Men's 100 metre freestyle
The Men's 100 Freestyle at the 10th FINA World Swimming Championships was swum 18 - 19 December in Dubai, United Arab Emirates. On 18 December 125 individuals swam in the Preliminary heats in the morning, with the top-16 advancing onto Semifinals that evening. The top-8 from Semifinals then advanced to the final the next evening.Records
At the start of the event, the existing World and Championship records were as follows.
| Name | Nation | Time | Location | Date |
| WR | Amaury Leveaux | | 44.94 | Rijeka | 13 December 2008 |
| CR | Nathan Adrian | | 46.67 | Manchester | 13 April 2008 |
The following records were established during the competition:
Results
Heats
- Fraser scratched the semifinals, so Dunford advanced to the semifinals in his place.
Semifinals
Final
