| Event: | Men's 100 metre backstroke |
| Competition: | 1998 FINA World Championships |
| Date: | 15 January 1998 |
| Competitors: | 34 |
| Win Value: | 55.00 seconds |
| Gold: | Lenny Krayzelburg |
| Goldnoc: | USA |
| Silver: | Mark Versfeld |
| Silvernoc: | CAN |
| Bronze: | Stev Theloke |
| Bronzenoc: | GER |
| Prev: | 1994 |
| Next: | 2001 |
The finals and the qualifying heats of the men's 100 metres backstroke event at the 1998 World Aquatics Championships were held on Thursday 1998-01-15 in Perth, Western Australia.
| Rank | Name | Time | |
|---|---|---|---|
| 55.00 | |||
| 55.17 | |||
| 55.20 | |||
| 4 | 55.21 | ||
| 5 | 55.32 | ||
| 6 | 55.45 | ||
| 7 | 55.97 | ||
| 8 | 56.03 |
| Rank | Name | Time | |
|---|---|---|---|
| 9 | 55.92 | ||
| 10 | 56.05 | ||
| 11 | 56.30 | ||
| 12 | 56.38 | ||
| 13 | 56.43 | ||
| 15 | 56.45 | ||
| 16 | 56.75 |
| Rank | Name | Time | |
|---|---|---|---|
| 1 | 55.11 | ||
| 2 | 55.22 | ||
| 3 | 55.57 | ||
| 4 | 55.58 | ||
| 5 | 55.62 | ||
| 6 | 55.70 | ||
| 7 | 55.78 | ||
| 9 | [1] | 55.79 | |
| 10 | 55.85 | ||
| 11 | 55.88 | ||
| 12 | 56.24 | ||
| 13 | 56.24 | ||
| 14 | 56.30 | ||
| 15 | 56.52 | ||
| 16 | 56.77 | ||
| 17 | 56.78 | ||
| 18 | 56.78 | ||
| 19 | 56.84 | ||
| 20 | 56.85 | ||
| 21 | 56.94 | ||
| 22 | 56.96 | ||
| 23 | 57.01 | ||
| 24 | 57.04 | ||
| 25 | 57.10 | ||
| 26 | 57.15 | ||
| 27 | 57.31 | ||
| 28 | 57.44 | ||
| 29 | 57.45 | ||
| 30 | 57.59 | ||
| 31 | 57.88 | ||
| 32 | 57.98 | ||
| 33 | 58.01 | ||
| 34 | 58.28 |