| Women's 200 metre individual medley at the 2025 SEA Games | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Venue | SAT Swimming Pool | |||||||||
| Date | 11 December | |||||||||
| Competitors | 11 from 6 nations | |||||||||
| Winning time | 2:13.42 | |||||||||
| Medalists | ||||||||||
| ||||||||||
The women's 200 metre individual medley event at the 2025 SEA Games took place on 11 December 2025 at the SAT Swimming Pool in Bangkok, Thailand.
All times are Indochina Standard Time (UTC+07:00)
| Date | Time | Event |
|---|---|---|
| Wednesday, 11 December 2025 | 9:35 | Heats |
| 19:21 | Final |
Prior to this competition, the existing world, Asian, and Southeast Asian Games records were as follows.
| World Record |  Summer McIntosh (CAN) | 2:05.70 | Victoria, Canada | 9 June 2025 |
| Asian Record |  Ye Shiwen (CHN) | 2:07.57 | London, United Kingdom | 31 July 2012 |
| Games Record |  Nguyễn Thị Ánh Viên (SGP) | 2:13.53 | Singapore, Singapore | 7 June 2015 |
| Rank | Heat | Lane | Swimmer | Nationality | Time | Notes |
|---|---|---|---|---|---|---|
| 1 | 2 | 4 | Letitia Sim | Singapore | 2:17.43 | Q |
| 2 | 1 | 4 | Kamonchanok Kwanmuang |  Thailand | 2:18.74 | Q |
| 3 | 1 | 4 | Quah Jing Wen | Singapore | 2:19.22 | Q |
| 4 | 2 | 4 | Xiandi Chua |  Philippines | 2:19.78 | Q |
| 5 | 2 | 5 | Phiangkhwan Pawapotako | Thailand | 2:20.47 | Q |
| 6 | 1 | 5 | Angelina Bella Messina |  Laos | 2:21.71 | Q |
| 7 | 1 | 6 | Chloe Isleta | Philippines | 2:22.45 | Q |
| 8 | 2 | 3 | Võ Thị Mỹ Tiên |  Vietnam | 2:23.64 | Q |
| 9 | 1 | 2 | Nguyễn Ngọc Tuyết Hân | Vietnam | 2:29.28 | R |
| 10 | 2 | 2 | Lynna Yeow Yi Jing |  Malaysia | 2:32.65 | R |
| 11 | 1 | 2 | Kaylonie Amphonesuh | Laos | 2:39.07 |
| Rank | Lane | Swimmer | Nationality | Time | Notes |
|---|---|---|---|---|---|
 | 4 | Letitia Sim | Singapore | 2:13.42 | GR , NR |
 | 5 | Kamonchanok Kwanmuang | Thailand | 2:16.14 | |
 | 1 | Võ Thị Mỹ Tiên | Vietnam | 2:16.66 | |
| 4 | 3 | Quah Jing Wen | Singapore | 2:17.42 | |
| 5 | 6 | Xiandi Chua | Philippines | 2:18.01 | |
| 6 | 7 | Chloe Isleta | Philippines | 2:22.09 | |
| 7 | 2 | Angelina Bella Messina | Laos | 2:23.23 | NR |
| 8 | 8 | Nguyễn Ngọc Tuyết Hân | Vietnam | 2:27.40 |