The final of the Women's 800 metres event at the 2003 Pan American Games took place on Wednesday August 6, 2003, with the heats staged a day earlier. Marian Burnett won the only silver medal for Guyana at the 2003 Pan American Games.
Medalists edit
| Gold | Adriana Muñoz Cuba
|
| Silver | Marian Burnett Guyana
|
| Bronze | Christiane dos Santos Brazil
|
Records edit
| World Record |  Jarmila Kratochvílová (TCH) |
1:53.28 | July 26, 1983 |  Munich, West Germany
|
| Pan Am Record | Ana Fidelia Quirot (CUB) |
1:58.71 | August 8, 1991 | Havana, Cuba
|
Results edit
| Rank | Athlete | Heats | Final | |
|---|---|---|---|---|
| Time | Rank | Time | ||
| 1 |  Adriana Muñoz (CUB) |
2:03.65 | 2 | 2:02.96 |
| 2 |  Marian Burnett (GUY) |
2:04.17 | 4 | 2:03.58 |
| 3 | Christiane dos Santos (BRA) |
2:04.09 | 3 | 2:04.37 |
| 4 | Yanelis Lara (CUB) |
2:04.20 | 5 | 2:04.58 |
| 5 | Luciana Mendes (BRA) |
2:04.28 | 6 | 2:05.52 |
| 6 |  Sheena Gooding (BAR) |
2:04.77 | 7 | 2:06.28 |
| 7 |  Hazel Clark (USA) |
2:03.54 | 1 | 2:09.12 |
| — |  Letitia Vriesde (SUR) |
DSQ | ||
| 9 |  Neisha Bernard-Thomas (GRN) |
2:04.22 | 9 | |
| 10 |  Melissa de Leon (TRI) |
2:05.06 | 10 | |
| 11 |  Sandra Moya (PUR) |
2:05.52 | 11 | |
| 12 |  Tamika Williams (BER) |
2:06.16 | 12 | |
| 13 |  Rosibel García (COL) |
2:08.08 | 13 | |
| 14 |  Kenia Sinclair (JAM) |
2:10.51 | 14 | |
| 15 |  Gabriela Medina (MEX) |
2:10.69 | 15 | |
| 16 | Lauren Simmons (USA) |
2:12.17 | 16 | |