2003 South American Junior Championships in Athletics
| XXXV South American Junior Championships in Athletics | |
|---|---|
| Dates | June 7–8 |
| Host city | Guayaquil, Ecuador |
| Venue | Estadio Modelo |
| Level | Junior |
| Events | 44 |
| Participation | about 230 athletes from 12 nations |
The 35th South American Junior Championships in Athletics were held at the Estadio Modelo in Guayaquil, Ecuador from June 7–8, 2003.