The women's 100 metre backstroke competition of the swimming event at the 2017 SEA Games was held on 21 August at the National Aquatic Centre in Kuala Lumpur, Malaysia.
| Swimming – Women's 100 metre backstroke at the 2017 SEA Games | ||||||||||
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| Venue | National Aquatic Centre | |||||||||
| Date | 21 August 2017 | |||||||||
| Competitors | 9 from 5 nations | |||||||||
| Medalists | ||||||||||
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Records edit
Prior to this competition, the existing Asian and Games records were as follows:
| Asian Record |  Aya Terakawa (JPN) |
58.70 | Barcelona, Spain | 4 August 2013 |
| Games Record |  Tao Li (SIN) |
1:02.11 | Palembang, Indonesia | 16 December 2011 |
The following records were established during the competition:
| Date | Event | Name | Nationality | Time | Record |
|---|---|---|---|---|---|
| 21 August | Final | Nguyễn Thị Ánh Viên |  Vietnam (VIE) |
1:01.89 | GR |
Schedule edit
All times are Malaysia Standard Time (UTC+08:00)
| Date | Time | Event |
|---|---|---|
| Monday, 21 August 2017 | 09:40 | Heat 1 |
| 09:40 | Heat 2 | |
| 20:00 | Final |
Results edit
Heats edit
The heats were held on 21 August.
Heat 1 edit
- Source: Heat 1 results
| Rank | Lane | Athletes | Time | Notes |
|---|---|---|---|---|
| 1 | 5 | Hoong En Qi (SGP) |
01:05.20 | Q |
| 2 | 3 |  Yessy Venisia Yosaputra (INA) |
01:05.25 | Q |
| 3 | 6 |  Caroline Chan (MAS) |
01:05.89 | Q |
| 4 | 2 | Nguyễn Diệp Phương (VIE) |
01:06.54 | |
| 5 | 4 |  Nicole Oliva (PHI) |
01:07.06 |
Heat 2 edit
- Source: Heat 2 results
| Rank | Lane | Athletes | Time | Notes |
|---|---|---|---|---|
| 1 | 7 | Nguyễn Thị Ánh Viên (VIE) |
01:03.84 | Q |
| 3 | 3 | Roxanne Ashley Yu (PHI) |
01:05.40 | Q |
| 2 | 5 | Nurul Fajar Fitriyati (INA) |
01:05.41 | Q |
| 4 | 6 |  Araya Wongvat (THA) |
01:05.43 | Q |
| 5 | 4 | Phiangkhwan Pawapotako (THA) |
01:05.58 | Q |
| 6 | 2 |  Nan Honey Oo (MYA) |
01:15.46 |
Final edit
- Source: Final Results
The final was held on 21 August.
| Rank | Lane | Athletes | Time | Notes |
|---|---|---|---|---|
 |
4 | Nguyễn Thị Ánh Viên (VIE) |
1:01.89 | GR, NR |
 |
2 | Nurul Fajar Fitriyati (INA) |
1:04.10 | NR |
 |
1 | Phiangkhwan Pawapotako (THA) |
1:04.59 | |
| 4 | 5 | Hoong En Qi (SGP) |
1:05.03 | |
| 5 | 3 | Yessy Venisia Yosaputra (INA) |
1:05.10 | |
| 6 | 7 | Araya Wongvat (THA) |
1:06.15 | |
| 7 | 8 | Caroline Chan (MAS) |
1:05.90 | |
| 8 | 6 | Roxanne Ashley Yu (PHI) |
1:06.10 |