The 2003 Central American Junior and Youth Championships in Athletics were held at the Estadio Nacional in San José, Costa Rica, between September 4–6, 2003.

[2] The medal table published include the U-14 and U-12 categories of the Age Group Championship.

*   Host nation (Costa Rica) The placing table for team trophy awarded to the 1st place overall team (boys and girls, including the U-14 and U-12 categories of the Age Group Championship) was published.

[3] A total number of 503 athletes (including U-14 and U-12) was reported to participate in the event.

[2] An unofficial count results in 301 athletes participating in the Junior and Youth categories.