The 2008 FIBA Asia Under-18 Championship was the 20th edition of the FIBA Asia's youth basketball championship. The games were played in Tehran, Iran, from August 28 to September 5, 2008.
The top three teams qualified for the 2009 FIBA Under-19 World Championship.
According to the FIBA Asia rules, each zone had two places, and the hosts (Iran) and holders (China) were automatically qualified. The other four places are allocated to the zones according to performance in the 2006 FIBA Asia Under-18 Championship.
<nowiki>*</nowiki> Turkey withdrew from the tournament.