The 1989 ABC Under-18 Championship was the tenth edition of the Asian Championship for Junior Men. The tournament took place in Manila, Philippines from January 24 to February 1, 1989.
On July 19, 1988, the Basketball Association of the Philippines announced that the Philippines was given hosting rights for the tournament after the country bested bids by Malaysia, Jordan and Thailand for the hosting rights.
China successfully defended their title they won three years ago also held in Manila, this time after defeating Chinese Taipei in the championship match. The tournament host, the Philippines, avenged their quarterfinal loss to Japan by defeating them in the battle for third place.