| Women's 100 metre butterfly at the 2025 SEA Games | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Venue | SAT Swimming Pool | |||||||||
| Date | 13 December | |||||||||
| Competitors | 10 from 6 nations | |||||||||
| Winning time | 59.76 | |||||||||
| Medalists | ||||||||||
| ||||||||||
The women's 100 metre butterfly event at the 2025 SEA Games took place on 13 December 2025 at the SAT Swimming Pool in Bangkok, Thailand.
All times are Indochina Standard Time (UTC+07:00)
| Date | Time | Event |
|---|---|---|
| Monday, 13 December 2025 | 9:00 | Heats |
| 18:00 | Final |
Prior to this competition, the existing world, Asian, and Southeast Asian Games records were as follows.
| World Record |  Gretchen Walsh (USA) | 54.60 | Fort Lauderdale, United States | 3 May 2025 |
| Asian Record |  Zhang Yufei (CHN) | 55.62 | Qingdao, China | 29 September 2020 |
| Games Record |  Tao Li (SGP) | 58.84 | Palembang, Indonesia | 12 November 2011 |
| Rank | Heat | Lane | Swimmer | Nationality | Time | Notes |
|---|---|---|---|---|---|---|
| 1 | 2 | 4 | Quah Jing Wen | Singapore | 1:00.87 | Q |
| 2 | 2 | 5 | Napatsawan Jaritkla |  Thailand | 1:01.76 | Q |
| 3 | 1 | 4 | Quah Ting Wen | Singapore | 1:01.98 | Q |
| 4 | 1 | 3 | Lim Shun Qi |  Malaysia | 1:02.15 | Q |
| 5 | 2 | 2 | Micaela Jasmine Mojdeh |  Philippines | 1:02.42 | Q |
| 6 | 2 | 3 | Michelle Surjadi Fang |  Indonesia | 1:02.61 | Q |
| 7 | 2 | 6 | Miranda Cristina Renner | Philippines | 1:02.65 | Q |
| 8 | 1 | 2 | Shannon Tan Yan Qing | Malaysia | 1:03.46 | Q |
| 9 | 1 | 6 | Nadia Aisha Nurazmi | Indonesia | 1:03.97 | R |
| 10 | 2 | 7 | Oo Nan Honey |  Myanmar | 1:05.28 | R |
| Rank | Lane | Swimmer | Nationality | Time | Notes |
|---|---|---|---|---|---|
 | 3 | Quah Ting Wen | Singapore | 59.76 | |
 | 4 | Quah Jing Wen | Singapore | 59.77 | |
 | 5 | Napatsawan Jaritkla | Thailand | 1:01.57 | |
| 4 | 2 | Michelle Surjadi Fang | Indonesia | 1:01.67 | |
| 5 | 6 | Lim Shun Qi | Malaysia | 1:01.89 | |
| 6 | 8 | Nadia Aisha Nurazmi | Indonesia | 1:02.17 | |
| 7 | 7 | Miranda Cristina Renner | Philippines | 1:02.61 | |
| 8 | 1 | Shannon Tan Yan Qing | Malaysia | 1:02.96 |