The 22nd South American Junior Championships in Athletics were held in Bogotá, Colombia, at the Estadio El Campín from July 13–15, 1990.

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

[2] An unofficial count yields the number of about 250 athletes from about 10 countries: Argentina (20), Bolivia (3), Brazil (54), Chile (22), Colombia (50), Ecuador (40), Panama (10), Paraguay (2), Peru (15), Venezuela (34).

Medal winners are published for men[3] and women[4] Complete results can be found on the "World Junior Athletics History" website.

[2] *   Host nation (Colombia)