The 20th South American Junior Championships in Athletics were held in Cubatão, Brazil from June 30-July 3, 1988.

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

[1] An unofficial count yields the number of about 254 athletes from about 10 countries: Argentina (49), Bolivia (7), Brazil (62), Chile (24), Colombia (4), Ecuador (21), Paraguay (31), Peru (19), Uruguay (22), Venezuela (15).

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 (Brazil)