| Women's 100 metre backstroke at the 2025 SEA Games | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Venue | SAT Swimming Pool | |||||||||
| Date | 13 December | |||||||||
| Competitors | 13 from 7 nations | |||||||||
| Winning time | 1:02.35 | |||||||||
| Medalists | ||||||||||
| ||||||||||
The women's 100 metre backstroke 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 |
|---|---|---|
| Saturday, 13 December 2025 | 9:14 | Heats |
| 18:25 | Final |
Prior to this competition, the existing world, Asian and Games records were as follows.
| World Record |  Regan Smith (USA) | 57.13 | Indianapolis, United States | 18 June 2024 |
| Asian Record |  Aya Terakawa (JPN) | 58.70 | Barcelona, Spain | 4 August 2013 |
| Games Record |  Teia Salvino (PHI) | 1:01.64 | Phnom Penh, Cambodia | 9 May 2023 |
| Rank | Heat | Lane | Swimmer | Nationality | Time | Notes |
|---|---|---|---|---|---|---|
| 1 | 1 | 5 | Levenia Sim |  Singapore | 1:03.44 | Q |
| 2 | 1 | 3 | Adelia Chantika Aulia |  Indonesia | 1:03.50 | Q |
| 3 | 1 | 4 | Flairene Candrea | Indonesia | 1:03.50 | Q |
| 4 | 2 | 4 | Kayla Sanchez | Philippines | 1:03.64 | Q |
| 5 | 2 | 3 | Mia Millar |  Thailand | 1:04.26 | Q |
| 6 | 2 | 5 | Xiandi Chua | Philippines | 1:04.58 | Q |
| 7 | 2 | 6 | Chong Xin Lin |  Malaysia | 1:04.84 | Q |
| 8 | 1 | 2 | Julia Yeo Shu Ning | Singapore | 1:04.93 | Q |
| 9 | 2 | 2 | Vivian Tee Xin Ling | Malaysia | 1:06.53 | R |
| 10 | 1 | 6 | Kanistha Tungnapakorn | Thailand | 1:06.77 | R |
| 11 | 1 | 1 | Astrid Dirkzwager |  Laos | 1:08.76 | NR |
| 12 | 2 | 7 | Yan Htet Wun |  Myanmar | 1:13.87 | |
| 13 | 2 | 1 | Anyalynn Phouleuanghong | Laos | 1:31.92 |
| Rank | Lane | Swimmer | Nationality | Time | Notes |
|---|---|---|---|---|---|
 | 6 | Kayla Sanchez | Philippines | 1:02.35 | |
 | 2 | Mia Millar | Thailand | 1:02.52 | NR |
 | 3 | Flairene Candrea | Indonesia | 1:02.60 | |
| 4 | 5 | Adelia Chantika Aulia | Indonesia | 1:02.94 | |
| 5 | 4 | Levenia Sim | Singapore | 1:02.97 | |
| 6 | 7 | Chong Xin Lin | Malaysia | 1:04.30 | |
| 7 | 1 | Julia Yeo Shu Ning | Singapore | 1:04.75 | |
| 8 | 8 | Vivian Tee Xin Ling | Malaysia | 1:05.35 |