| Event: | Men's 100 metre breaststroke |
| Games: | 1999 |
| Venue: | Pan Am Pool |
| Dates: | August 2 (preliminaries and finals) |
| Competitors: | - |
| Nations: | - |
| Win Label: | Winning score |
| Gold: | Ed Moses |
| Goldnoc: | USA |
| Silver: | Jarrod Marrs |
| Silvernoc: | USA |
| Silver2: | Morgan Knabe |
| Silvernoc2: | CAN |
| Prev: | 1995 |
| Next: | 2003 |
The Men's 100 Metre Breaststroke competition of the swimming events at the 1999 Pan American Games took place on 2 August at the Pan Am Pool.[1] The last Pan American Games champion was Seth Van Neerden of the U.S.[2] [3] [4] [5] [6] [7] [8]
This race consisted of two lengths of the pool, both lengths being in breaststroke.[9]
All times are in minutes and seconds.
The first round was held on August 2.
| Rank | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|
| 1 | 1:01.26 | Q, GR | |||
| 2 | 1:02.52 | Q | |||
| 3 | 1:02.61 | Q | |||
| 4 | 1:04.04 | Q | |||
| 5 | 1:04.16 | Q | |||
| 6 | 1:04.58 | Q | |||
| 7 | 1:04.84 | Q | |||
| 8 | 1:04.99 | Q |
The B final was held on August 2.[10]
| Rank | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|
| 9 | 1:04.38 | ||||
| 10 | 1:04.52 | ||||
| 11 | 1:05.09 | ||||
| 12 | 1:05.34 | ||||
| 13 | 1:05.52 | ||||
| 14 | 1:06.85 | ||||
| 15 | 1:07.26 | ||||
| 16 | 1:07.52 |
The A final was held on August 2.
| Rank | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|
| 1:00.99 | GR | ||||
| 1:02.11 | |||||
| 1:02.11 | |||||
| 4 | 1:03.72 | ||||
| 5 | 1:04.08 | ||||
| 6 | 1:04.59 | ||||
| 7 | 1:04.66 | ||||
| 8 | 1:05.18 |