[1] The winner, Seongnam Ilhwa Chunma, qualified for the 2010 FIFA Club World Cup in UAE.

[2] A total of 38 clubs were due to participate in the 2010 AFC Champions League (eventually reduced to 37).

† One of the A-League clubs, Wellington Phoenix, is based in New Zealand, an OFC member country, therefore not being eligible to compete in the ACL.

* Number of appearances (including qualifying rounds) since the 2002/03 season, when the competition was rebranded as the AFC Champions League The ACL 2010 schedule was released on 17 July 2009.

[6] Each club plays double round-robin (home and away) against fellow three group members, a total of 6 matches each.

The clubs are ranked according to points and tie breakers are in following order: Winners and runners-up of each group will qualify for the next round.