The 2009–10 ASEAN Basketball League season was the first season of competition since its establishment. A total of six teams competed in the league. The regular season began on 10 October 2009 and ended on 24 January 2010, which was followed by a post-season involving the top four teams.
The Philippine Patriots of Philippines had the #1 seed at the conclusion of the regular season.
The semifinals is a best-of-three series, with the higher seeded team hosting game 1, and 3 if necessary.
The finals is a best-of-five series, with the higher seeded team hosting games 1 and 2, and 5 if necessary.
Last update: End of Round 11
Last update: End of Round 11
See 2009–2010 ABL team rosters.