1990 ABC Under-18 Championship

The 1990 ABC Under-18 Championship was the eleventh edition of the Asian Championship for Junior Men. The tournament took place in Nagoya, Japan from August to 2 September 1990. Top three teams from this competition were qualified for the World Junior Basketball Championship held in Edmonton, Canada from July 26 to August 4 of 1991.

won their first-ever championship after breezing past in the championship match, 82-63. Defending champions, edged out the , 96-93 in the battle for third place.

The top three teams represented Asia to the 1991 FIBA Under-19 World Championship.

Preliminary round
Top two teams from each group advance to the final round.

Draw

 * Group A: China, Malaysia, India, Kuwait
 * Group B: Taiwan, Indonesia, Sri Lanka, Japan
 * Group C: Philippines, Iran, Hong Kong
 * Group D: South Korea, Saudi Arabia, Syria