The 2009–10 CBA season was the 15th CBA season. Guangdong Southern Tigers won their third consecutive CBA title for the second time, defeating Xinjiang Flying Tigers in the Finals, four games to one.
Yunnan Bulls were suspended for the season due to salary reasons, and would conditionally retain their eligibility for the 2010–11 season.
Foreign players of each team could play no more than 6 quarters (5 quarters when facing Bayi Rockets) collectively each game. Asian players were not regarded as foreign players.
In the Playoffs, the distance of 3 point line expanded from 6.25m to 6.75m.[1]
^INJ Unable to participate due to injury. Zhang Zhihan and Zhang Ji were named as replacements for Stromile Swift.
^PER Unable to participate for personal reasons. Yang Ming was named as the replacement for Stephon Marbury.
Teams in bold advanced to the next round. The numbers to the left of each team indicate the team's seeding in regular season, and the numbers to the right indicate the number of games the team won in that round. Home court advantage belongs to the team with the better regular season record; teams enjoying the home advantage are shown in italics.