| Event: | Women's 100 metre backstroke |
| Competition: | 1998 FINA World Championships |
| Date: | 14 January 1998 |
| Win Value: | 1 minute 01.16 seconds |
| Gold: | Lea Maurer |
| Goldnoc: | USA |
| Silver: | Mai Nakamura |
| Silvernoc: | JPN |
| Bronze: | Sandra Völker |
| Bronzenoc: | GER |
| Prev: | 1994 |
| Next: | 2001 |
The finals and the qualifying heats of the women's 100 metre backstroke event at the 1998 World Aquatics Championships were held on Wednesday 14 January 1998 in Perth, Western Australia.
| Rank | Name | Time | |
|---|---|---|---|
| 1:01.16 | |||
| 1:01.28 | |||
| 1:01.47 | |||
| 4 | 1:01.81 | ||
| 5 | 1:02.31 | ||
| 6 | 1:02.40 | ||
| 7 | 1:02.58 | ||
| 8 | 1:02.69 |
| Rank | Name | Time | |
|---|---|---|---|
| 9 | 1:03.26 | ||
| 10 | 1:03.45 | ||
| 11 | 1:03.60 | ||
| 12 | 1:03.61 | ||
| 13 | 1:03.86 | ||
| 14 | 1:04.25 | ||
| 15 | 1:04.27 | ||
| 16 | 1:04.79 |
| Rank | Name | Time | |
|---|---|---|---|
| 1 | 1:00.77 | ||
| 2 | 1:01.27 | ||
| 3 | 1:02.18 | ||
| 4 | 1:02.26 | ||
| 5 | 1:02.37 | ||
| 6 | 1:02.63 | ||
| 7 | 1:02.85 | ||
| 8 | 1:02.98 | ||
| 9 | 1:03.05 | ||
| 10 | [1] | 1:03.18 | |
| 11 | 1:03.54 | ||
| 12 | 1:03.61 | ||
| 13 | 1:03.82 | ||
| 14 | 1:03.91 | ||
| 15 | 1:03.94 | ||
| 16 | 1:04.00 | ||
| 17 | 1:04.15 | ||
| 18 | 1:04.33 | ||
| 19 | 1:04.35 | ||
| 20 | 1:04.41 | ||
| 21 | 1:04.59 | ||
| 22 | 1:04.75 | ||
| 23 | 1:04.89 | ||
| 24 | 1:05.15 | ||
| 25 | 1:05.17 | ||
| 26 | 1:05.46 | ||
| 27 | 1:05.50 |