# Swimming at the 2023 Pan American Games – Men's 100 metre breaststroke

The men's 100 metre breaststroke competition of the swimming events at the 2023 Pan American Games were held October 21, 2023 at the Aquatic Center in Santiago, Chile.

## Records

| World record | Adam Peaty (GBR) | 56.88 | Gwangju, South Korea | July 21, 2019 |
| Pan American Games record | Felipe França Silva (BRA) | 59.21 | Toronto, Canada | July 17, 2015 |

## Results

| KEY: | QA | Qualified for A final | QB | Qualified for B final | GR | Games record | NR | National record | PB | Personal best | SB | Seasonal best |

### Heats

The first round was held on October 21.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 3 | 4 | Jacob Foster | United States | 1:00.85 | QA |
| 2 | 2 | 4 | João Gomes Júnior | Brazil | 1:00.89 | QA |
| 3 | 4 | 4 | Noah Nichols | United States | 1:01.10 | QA |
| 4 | 4 | 3 | Gabe Mastromatteo | Canada | 1:01.37 | QA |
| 5 | 2 | 3 | Raphael Windmuller | Brazil | 1:01.43 | QA |
| 6 | 3 | 5 | Jorge Murillo | Colombia | 1:01.46 | QA |
| 7 | 3 | 3 | Xavier Ruiz | Puerto Rico | 1:01.67 | QA |
| 8 | 4 | 5 | Miguel de Lara | Mexico | 1:01.75 | QA |
| 9 | 4 | 6 | Mariano Lazzerini | Chile | 1:01.90 | QB |
| 10 | 2 | 5 | James Dergousoff | Canada | 1:02.19 | QB |
| 11 | 4 | 8 | Tomas Peribonio | Ecuador | 1:02.21 | QB, NR |
| 12 | 4 | 2 | Andres Puente | Mexico | 1:02.42 | QB |
| 13 | 3 | 6 | Juan García | Colombia | 1:02.77 | QB |
| 14 | 2 | 2 | Gabriel Morelli | Argentina | 1:03.08 | QB |
| 15 | 2 | 6 | Juan Carrocia | Argentina | 1:03.20 | QB |
| 16 | 3 | 7 | Josué Domínguez | Dominican Republic | 1:03.52 | QB |
| 17 | 4 | 7 | Andres Martijena | Dominican Republic | 1:03.64 | |
| 18 | 3 | 1 | Tyler Christianson | Panama | 1:03.73 | |
| 19 | 2 | 8 | Vicente Villaneuva | Chile | 1:03.80 | |
| 20 | 3 | 8 | Maximiliano Cereceda | Chile | 1:04.31 | |
| 21 | 2 | 7 | Eric Veit | Venezuela | 1:04.31 | |
| 22 | 4 | 1 | Kito Campbell | Jamaica | 1:05.08 | |
| 23 | 2 | 1 | Adriel Sanes | Virgin Islands | 1:06.13 | |
| 24 | 1 | 4 | Mark-Anthony Thompson | Bahamas | 1:07.18 | |
| 25 | 1 | 5 | Samuel Williamson | Bermuda | 1:08.13 | |
| 26 | 1 | 3 | Nector Segovia | El Salvador | 1:09.26 | |
| 27 | 1 | 6 | Nikolas Sylvester | Saint Vincent and the Grenadines | 1:13.11 | |

### Final B

The B final was also held on October 21.
| Rank | Lane | Name | Nationality | Time |
| 9 | 6 | Andres Puente | Mexico | 1:01.18 |
| 10 | 5 | James Dergousoff | Canada | 1:01.97 |
| 11 | 4 | Mariano Lazzerini | Chile | 1:02.11 |
| 12 | 7 | Gabriel Morelli | Argentina | 1:02.20 |
| 13 | 2 | Juan García | Colombia | 1:02.29 |
| 14 | 3 | Tomas Peribonio | Ecuador | 1:02.59 |
| 15 | 8 | Josué Domínguez | Dominican Republic | 1:03.92 |
| 16 | 1 | Juan Carrocia | Argentina | 1:05.03 |

### Final A

The A final was also held on October 21.
| Rank | Lane | Name | Nationality | Time |
| | 4 | Jacob Foster | United States | 59.99 |
| | 3 | Noah Nichols | United States | 1:00.43 |
| | 8 | Miguel de Lara | Mexico | 1:00.90 |
| 4 | 7 | Jorge Murillo | Colombia | 1:01.15 |
| 5 | 5 | João Gomes Júnior | Brazil | 1:01.17 |
| 6 | 6 | Gabe Mastromatteo | Canada | 1:01.39 |
| 7 | 2 | Raphael Windmuller | Brazil | 1:01.62 |
| 8 | 1 | Xavier Ruiz | Puerto Rico | 1:02.42 |