| Noc: | BIZ |
| Nocname: | Belize Olympic and Commonwealth Games Association |
| Year: | 2003 |
| Date: | 1–17 August 2003 |
| Games: | Pan American Games |
| Location: | Santo Domingo |
| Flagbearer: | Leonard Arnold[1] |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Rank: | 33 |
| Appearances: |
The 14th Pan American Games were held in Santo Domingo, Dominican Republic from August 1 to August 17, 2003.
See main article: Athletics at the 2003 Pan American Games.