Swimming at the 1999 Pan American Games – Men's 4 × 100 metre medley relay
# Swimming at the 1999 Pan American Games – Men's 4 × 100 metre medley relay

The men's 4 × 100 metre medley relay competition of the swimming events at the 1999 Pan American Games took place on August 7 at the Pan Am Pool. The last Pan American Games champion was the United States.

## 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 |
| - | - | - | - | - | - | - | - | - | - | - | - | - |

### Final

The final was held on August 7.

| Rank | Name | Nationality | Time | Notes |
| - | - | - | - | - |
| | Alexandre Massura Marcelo Tomazini Fernando Scherer Gustavo Borges | Brazil | 3:40.27 | GR, SA |
| | Matt Allen Ed Moses Jarod Schroeder Scott Tucker | United States | 3:40.57 | |
| | Mark Versfeld Morgan Knabe Shamek Pietucha Yannick Lupien | Canada | 3:41.04 | |
| 4 | - - - - | Cuba | 3:44.02 | |
| 5 | - - - - | Mexico | 3:51.45 | |
| 6 | - - - - | Ecuador | 3:54.56 | |
| 7 | - - - - | Bahamas | 3:58.37 | |
| 8 | - - - - | Peru | 4:02.27 | |
