The 30th South American Junior Championships in Athletics were held in Córdoba, Argentina from May 16–17, 1998.

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

[1] An unofficial count yields the number of about 286 athletes from about 11 countries: Argentina (66), Bolivia (12), Brazil (68), Chile (46), Colombia (24), Ecuador (15), Panama (3), Paraguay (4), Peru (9), Uruguay (15), Venezuela (24).

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 (Argentina)