| Swimming at the 2013 SEA Games | ||
|---|---|---|
| | ||
| Freestyle | ||
| 50 m | men | women |
| 100 m | men | women |
| 200 m | men | women |
| 400 m | men | women |
| 800 m | women | |
| 1500 m | men | |
| Backstroke | ||
| 100 m | men | women |
| 200 m | men | women |
| Breaststroke | ||
| 100 m | men | women |
| 200 m | men | women |
| Butterfly | ||
| 100 m | men | women |
| 200 m | men | women |
| Individual medley | ||
| 200 m | men | women |
| 400 m | men | women |
| Freestyle relay | ||
| 4×100 m | men | women |
| 4×200 m | men | women |
| Medley relay | ||
| 4×100 m | men | women |
The Men's 100 metre freestyle event at the 2013 SEA Games took place on 13 December 2013 at Wunna Theikdi Aquatics Centre.
There were 17 competitors from 9 countries who took part in this event. Three heats were held. The heat in which a swimmer competed did not formally matter for advancement, as the swimmers with the top eight times from both field qualified for the finals.
All times are Myanmar Standard Time (UTC+06:30)
| Date | Time | Event |
|---|---|---|
| Thursday, 13 December 2013 | 09:00 | Heats |
| 18:07 | Final |
Prior to this competition, the existing world, Asian, and Southeast Asian Games records were as follows.
| World Record | 46.91 | Rome, Italy | 30 July 2009 | |
| Asian Record | 48.27 | Shenyang, China | 8 September 2013 | |
| Games Record | 50.16 | Vientiane, Laos | 11 December 2009 |
| Rank | Heat | Lane | Athlete | Time | Notes |
|---|---|---|---|---|---|
| 1 | 2 | 5 | 51.21 | Q | |
| 2 | 1 | 4 | 51.54 | Q | |
| 3 | 3 | 5 | 51.56 | Q | |
| 4 | 1 | 3 | 52.01 | Q | |
| 5 | 3 | 4 | 52.02 | Q | |
| 6 | 1 | 5 | 52.13 | Q | |
| 6 | 2 | 3 | 52.13 | Q | |
| 8 | 2 | 4 | 52.17 | Q | |
| 9 | 3 | 6 | 52.33 | ||
| 10 | 3 | 3 | 52.48 | ||
| 11 | 2 | 6 | 53.16 | ||
| 12 | 1 | 6 | 54.26 | ||
| 13 | 3 | 2 | 57.71 | ||
| 14 | 2 | 2 | 58.48 | ||
| 15 | 1 | 2 | 1:00.89 | ||
| 16 | 3 | 7 | 1:01.95 | ||
| 17 | 2 | 7 | 1:04.58 |
| Rank | Lane | Athlete | Time | Notes |
|---|---|---|---|---|
| 4 | 49.99 | GR | ||
| 3 | 50.52 | |||
| 5 | 50.83 | |||
| 4 | 8 | 51.21 | ||
| 5 | 1 | 51.52 | ||
| 6 | 6 | 51.64 | ||
| 7 | 7 | 51.65 | ||
| 8 | 2 | 52.04 |