Swimming at the 2017 SEA Games – Women's 100 metre backstroke

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.

Records
The following records were established during the competition:

Schedule
All times are Malaysia Standard Time (UTC+08:00)

Heats
The heats were held on 21 August.

Heat 1

 * Source: Heat 1 results

Heat 2

 * Source: Heat 2 results

Final

 * Source: Final Results

The final was held on 21 August.