# Swimming at the 2019 Pan American Games – Men's 100 metre freestyle

The men's 100 metre freestyle competition of the swimming events at the 2019 Pan American Games were held on August 8, 2019 at the Villa Deportiva Nacional Videna cluster.

## Records

Prior to this competition, the existing world and Pan American Games records were as follows:
| World record | César Cielo Filho (BRA) | 46.91 | Rome, Italy | July 30, 2009 |
| Pan American Games record | César Cielo Filho (BRA) | 47.84 | Guadalajara, Mexico | October 16, 2011 |

## Results

| 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 8.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Michael Chadwick | United States | 48.94 | QA |
| 2 | 3 | 4 | Marcelo Chierighini | Brazil | 49.02 | QA |
| 3 | 3 | 5 | Mikel Schreuders | Aruba | 49.08 | QA, NR |
| 4 | 3 | 6 | Cristian Quintero | Venezuela | 49.15 | QA |
| 5 | 2 | 3 | Breno Correia | Brazil | 49.24 | QA |
| 6 | 4 | 4 | Nathan Adrian | United States | 49.54 | QA |
| 7 | 3 | 1 | Brett Fraser | Cayman Islands | 49.68 | QA |
| 8 | 3 | 3 | Long Gutiérrez | Mexico | 49.73 | QSO |
| 8 | 2 | 5 | Renzo Tjon-A-Joe | Suriname | 49.73 | QSO |
| 8 | 2 | 6 | Guido Buscaglia | Argentina | 49.73 | QSO |
| 11 | 4 | 6 | Alberto Mestre Vivas | Venezuela | 49.74 | QB |
| 12 | 4 | 5 | Jorge Iga | Mexico | 49.87 | QB |
| 13 | 4 | 3 | Federico Grabich | Argentina | 49.88 | WD |
| 14 | 4 | 2 | Ben Hockin | Paraguay | 50.28 | QB |
| 15 | 4 | 8 | Jared Fitzgerald | Bahamas | 51.16 | QB |
| 16 | 4 | 7 | Isaac Beitía | Panama | 51.18 | QB |
| 17 | 3 | 7 | Gabriel Araya | Chile | 51.45 | QB |
| 18 | 2 | 7 | Jean-Luc Zephir | Saint Lucia | 51.77 | QB |
| 19 | 2 | 1 | Miguel Mena | Nicaragua | 52.07 | |
| 20 | 2 | 8 | Sebastian Arispe Silva | Peru | 52.10 | |
| 21 | 3 | 2 | Esnaider Reales | Colombia | 52.19 | |
| 22 | 1 | 4 | Marco Flores | Honduras | 52.21 | |
| 23 | 4 | 1 | Jesse Washington | Bermuda | 52.22 | |
| 24 | 3 | 8 | Ricardo Espinosa | Peru | 52.29 | |
| 25 | 2 | 2 | Alex Sobers | Barbados | 52.45 | |
| 26 | 1 | 5 | Delron Felix | Grenada | 53.46 | |
| 27 | 1 | 3 | Lleyton Martin | Antigua and Barbuda | 55.45 | |
| 28 | 1 | 2 | Daniel Scott | Guyana | 56.94 | |
| 29 | 1 | 6 | Cruz Halbich | Saint Vincent and the Grenadines | 57.61 | |

### Swim-off

The swim-off was also held on August 8.
| Rank | Lane | Name | Nationality | Time | Notes |
| 8 | 3 | Long Gutiérrez | Mexico | 49.69 | QA |
| 9 | 4 | Renzo Tjon-A-Joe | Suriname | 50.15 | WD |
| 10 | 5 | Guido Buscaglia | Argentina | 50.19 | QB |

### Final B

The B final was also held on August 8.
| Rank | Lane | Name | Nationality | Time | Notes |
| 9 | 6 | Ben Hockin | Paraguay | 49.89 | |
| 10 | 3 | Jorge Iga | Mexico | 50.00 | |
| 11 | 5 | Alberto Mestre Vivas | Venezuela | 50.08 | |
| 12 | 4 | Guido Buscaglia | Argentina | 50.15 | |
| 13 | 2 | Jared Fitzgerald | Bahamas | 50.81 | NR |
| 14 | 1 | Gabriel Araya | Chile | 51.25 | NR |
| 15 | 8 | Jean-Luc Zephir | Saint Lucia | 51.94 | |
| 16 | 7 | Isaac Beitía | Panama | 52.03 | |

### Final A

The A final was also held on August 8.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 5 | Marcelo Chierighini | Brazil | 48.09 | |
| | 7 | Nathan Adrian | United States | 48.17 | |
| | 4 | Michael Chadwick | United States | 48.88 | |
| 4 | 6 | Cristian Quintero | Venezuela | 48.94 | NR |
| 5 | 2 | Breno Correia | Brazil | 49.14 | |
| 6 | 3 | Mikel Schreuders | Aruba | 49.21 | |
| 7 | 8 | Long Gutiérrez | Mexico | 49.84 | |
| 8 | 1 | Brett Fraser | Cayman Islands | 49.97 | |