Swimming at the 1999 Pan American Games – Men's 100 metre butterfly
# Swimming at the 1999 Pan American Games – Men's 100 metre butterfly

The men's 100 metre butterfly competition of the swimming events at the 1999 Pan American Games took place on 3 August at the Pan Am Pool. The last Pan American Games champion was Mark Henderson of US.

This race consisted of two lengths of the pool, all in butterfly.

## Results

All times are in minutes and seconds.

| KEY: | q | Fastest non-qualifiers | Q | Qualified | GR | Games record | NR | National record | PB | Personal best | SB | Seasonal best |
| - | - | - | - | - | - | - | - | - | - | - | - | - |

### Heats

The first round was held on August 3.

| Rank | Name | Nationality | Time | Notes |
| - | - | - | - | - |
| 1 | Francisco Sánchez | Venezuela | 53.63 | Q |
| 2 | - | - | - | Q |
| 3 | - | - | - | Q |
| 4 | - | - | - | Q |
| 5 | - | - | - | Q |
| 6 | - | - | - | Q |
| 7 | - | - | - | Q |
| 8 | - | - | - | Q |
| 11 | Jarod Schroeder | United States | 55.89 | |
| 17 | Sabir Muhammad | United States | 57.20 | |

### B Final

The B final was held on August 3.

| Rank | Name | Nationality | Time |
| - | - | - | - |
| 9 | Oswaldo Quevedo | Venezuela | 54.62 |
| 10 | Jarod Schroeder | United States | 55.11 |
| 11 | Gabriel Mangabeira | Brazil | 55.81 |
| 12 | Stephen Fahy | Bermuda | 56.41 |
| 13 | Sabir Muhammad | United States | 56.41 |
| 14 | Ruben Piñeda | El Salvador | 56.68 |
| 15 | Roberto Delgado | Ecuador | 56.89 |
| 16 | Nicholas Rees | Bahamas | 57.07 |

### A Final

The A final was held on August 3.

| Rank | Name | Nationality | Time | Notes |
| - | - | - | - | - |
| | Francisco Sánchez | Venezuela | 53.33 | GR |
| | Shamek Pietucha | Canada | 53.40 | |
| | José Meolans | Argentina | 54.03 | |
| 4 | Jesus González | Mexico | 54.68 | |
| 5 | Yohan García | Cuba | 54.85 | |
| 6 | Andrew Livingston | Puerto Rico | 54.97 | |
| 7 | Collin Sood | Canada | 55.12 | |
| 8 | Pablo Abal | Argentina | 55.27 | |
