The 9th Central American and Caribbean Junior Championships were held in Havana, Cuba, between 6–8 July 1990.

[3] Complete results can be found on the World Junior Athletics History website.

"[5] Therefore, it is assumed that additional athletes from host country Cuba started out of competition, especially in the field events, and were not eligible for gaining championships medals.

[2] *   Host nation (Cuba)Detailed result lists can be found on the World Junior Athletics History website.

[4] An unofficial count yields a number of about 406 athletes (219 junior (under-20) and 187 youth (under-17)) from about 12 countries: