Swimming at the 2003 Pan American Games – Men's 100 meter breaststroke
| Swimming at the 2003 Pan American Games  in  Santo Domingo | ||
| Freestyle | ||
| 50 m | men | women |
| 100 m | men | women |
| 200 m | men | women |
| 400 m | men | women |
| 800 m | women | |
| 1500 m | men | |
| Backstroke | ||
| 100 m | men | women |
| 200 m | men | women |
| Breaststroke | ||
| 100 m | men | women |
| 200 m | men | women |
| Butterfly | ||
| 100 m | men | women |
| 200 m | men | women |
| Individual medley | ||
| 200 m | men | women |
| 400 m | men | women |
| Freestyle relay | ||
| 4×100 m | men | women |
| 4×200 m | men | women |
| Medley relay | ||
| 4×100 m | men | women |
The Men's 100m Breaststroke event at the 2003 Pan American Games took place on August 12, 2003 (Day 11 of the Games).
Medalists
| Gold |  Mark GangloffUnited States (USA) |
| Silver | Jarrod Marrs United States (USA) |
| Bronze |  Eduardo FischerBrazil (BRA) |
Records
| World Record |  Kosuke Kitajima (JPN) | 59.78 | 2003-07-21 |  Barcelona, Spain |
| Pan Am Record | Ed Moses (USA) | 1:00.99 | 1999-08-02 |  Winnipeg, Canada |
Results
| Place | Swimmer | Heats | Final | ||
|---|---|---|---|---|---|
| Time | Rank | Time | |||
| 1 | Mark Gangloff (USA) | 1:02.04 | 1 | 1:00.95 | |
| 2 | Jarrod Marrs (USA) | 1:02.15 | 2 | 1:01.71 | |
| 3 | Eduardo Fischer (BRA) | 1:02.77 | 3 | 1:01.88 SA | |
| 4 | Scott Dickens (CAN) | 1:03.03 | 5 | 1:02.13 | |
| 5 | Henrique Barbosa (BRA) | 1:02.98 | 4 | 1:02.81 | |
| 6 |  Alfredo Jacobo (MEX) | 1:03.92 | 7 | 1:03.44 | |
| 7 |  Juan Vargas (CUB) | 1:03.83 | 6 | 1:03.55 | |
| 8 | Matthew Mains (CAN) | 1:03.96 | 8 | 1:03.65 | |
| 9 |  Bradley Ally (BAR) | 1:45.27 | 20 | 1:03.82 | |
| 10 |  Arsenio López (PUR) | 1:05.38 | 10 | 1:04.01 | |
| 11 |  Alvaro Fortuny (GUA) | 1:05.69 | 12 | 1:05.43 | |
| 12 |  Francisco Suriano (ESA) | 1:05.12 | 9 | 1:05.47 | |
| 13 | Hiram Carrion (PUR) | 1:06.54 | 13 | 1:05.63 | |
| 14 |  Cristián Soldano (ARG) | 1:05.39 | 11 | 1:05.65 | |
| 15 | Sergio Meléndez (ESA) | 1:07.02 | 14 | 1:06.66 | |
| 16 | Alfonso Espinosa (DOM) | 1:07.44 | 15 | 1:07.34 | |
| 17 |  Travano McPhee (BAH) | 1:07.64 | 16 | ||
| 18 |  Antonio León (PAR) | 1:09.28 | 17 | ||
| 19 | Guillermo Henriquez (DOM) | 1:10.29 | 18 | ||
| 20 |  Onan Thom (GUY) | 1:10.78 | 19 | ||
Notes
References
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