The 15th South American Junior Championships in Athletics were held in Medellín, Colombia from June 9–12, 1983.

Detailed result lists can be found on the "World Junior Athletics History" website.

[1] An unofficial count yields the number of about 162 athletes from about 8 countries: Argentina (29), Bolivia (1), Brazil (50), Chile (14), Colombia (45), Peru (4), Uruguay (2), Venezuela (17).

Medal winners are published for men[2] and women[3] Complete results can be found on the "World Junior Athletics History" website.

[1] *   Host nation (Colombia)