| Event: | Women's 100 metre backstroke |
| Games: | 2018 |
| Venue: | Gold Coast Aquatic Centre |
| Dates: | 6 April (heats, semifinals) 7 April (final) |
| Competitors: | 26 |
| Nations: | 17 |
| Win Value: | 58.63 |
| Gold: | Kylie Masse |
| Goldcga: | CAN |
| Silver: | Emily Seebohm |
| Silvercga: | AUS |
| Bronze: | Taylor Ruck |
| Bronzecga: | CAN |
| Prev: | 2014 |
| Next: | 2022 |
The women's 100 metre backstroke event at the 2018 Commonwealth Games was held on 6 and 7 April at the Gold Coast Aquatic Centre.
The schedule is as follows:[1]
All times are Australian Eastern Standard Time (UTC+10)
| Date | Time | Round | ||||
|---|---|---|---|---|---|---|
| Friday 6 April 2018 | 11:12 | Qualifying | ||||
| 20:55 | Semifinals | |||||
| style=background:lemonchiffon | Saturday 7 April 2018 | style=background:lemonchiffon | 20:03 | style=background:lemonchiffon | Final |
Prior to this competition, the existing world, Commonwealth and Games records were as follows:
The following records were established during the competition:
| Date | Event | Name | Nationality | Time | Record | |
|---|---|---|---|---|---|---|
| 6 April | Heat 3 | 58.91 | GR | |||
| 6 April | Heat 4 | 58.70 | GR | |||
| 6 April | Semifinals | 58.66 | GR | |||
| 7 April | Final | 58.63 | GR |
| Rank | Heat | Lane | Name | Nation | Result | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 4 | 4 | 58.70 | Q, GR | |||
| 2 | 3 | 4 | 58.91 | Q, GR | |||
| 3 | 4 | 3 | 1:00.49 | Q | |||
| 4 | 4 | 5 | 1:00.57 | Q | |||
| 5 | 2 | 5 | 1:00.65 | Q | |||
| 6 | 2 | 4 | 1:00.72 | Q | |||
| 7 | 2 | 3 | 1:00.82 | Q | |||
| 8 | 4 | 6 | 1:01.04 | Q | |||
| 9 | 4 | 2 | 1:01.33 | Q | |||
| 10 | 3 | 3 | 1:01.38 | Q | |||
| 11 | 3 | 5 | 1:01.51 | Q | |||
| 12 | 3 | 6 | 1:02.29 | Q | |||
| 13 | 3 | 7 | 1:02.58 | Q | |||
| 14 | 2 | 6 | 1:02.63 | Q | |||
| 15 | 4 | 7 | 1:02.81 | Q | |||
| 16 | 2 | 7 | 1:03.08 | Q | |||
| 17 | 3 | 2 | 1:03.39 | ||||
| 18 | 3 | 1 | 1:04.75 | ||||
| 19 | 4 | 8 | 1:04.90 | ||||
| 20 | 2 | 8 | 1:05.94 | ||||
| 21 | 4 | 1 | 1:06.02 | ||||
| 22 | 3 | 8 | 1:06.41 | ||||
| 23 | 2 | 1 | 1:06.64 | ||||
| 24 | 1 | 4 | 1:07.26 | ||||
| 25 | 1 | 5 | 1:07.64 | ||||
| 26 | 1 | 3 | 1:10.57 | ||||
| 27 | 2 | 2 | DNS |
| Rank | Heat | Lane | Name | Nation | Result | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 2 | 4 | 58.66 | Q, GR | |||
| 2 | 1 | 4 | 58.95 | Q | |||
| 3 | 1 | 3 | 1:00.06 | Q | |||
| 4 | 2 | 3 | 1:00.11 | Q | |||
| 5 | 1 | 5 | 1:00.33 | Q | |||
| 6 | 2 | 7 | 1:00.37 | Q | |||
| 7 | 2 | 6 | 1:00.63 | Q | |||
| 8 | 1 | 2 | 1:00.67 | ||||
| 9 | 2 | 5 | 1:00.67 | ||||
| 10 | 1 | 7 | 1:00.93 | ||||
| 11 | 1 | 6 | 1:01.39 | ||||
| 12 | 2 | 2 | 1:01.75 | ||||
| 13 | 1 | 1 | 1:02.29 | ||||
| 14 | 1 | 8 | 1:02.62 | ||||
| 15 | 2 | 1 | 1:03.01 | ||||
| 16 | 2 | 8 | 1:03.06 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 1:01.06 | Q | |||
| 2 | 5 | 1:01.13 |
| Rank | Lane | Name | Nation | Result | Notes | |
|---|---|---|---|---|---|---|
| 4 | 58.63 | GR | ||||
| 5 | 58.66 | |||||
| 3 | 58.97 | |||||
| 4 | 6 | 1:00.08 | ||||
| 5 | 2 | 1:00.17 | ||||
| 6 | 8 | 1:00.74 | ||||
| 6 | 1 | 1:00.74 | ||||
| 8 | 7 | 1:00.83 |