The 2011–12 NBA season, the 66th season of the National Basketball Association (NBA), will officially begin with the signing of a new collective bargaining agreement (CBA) between the owners of all 30 NBA teams and the NBA's players. The previous CBA, which was ratified in 2005, expired at 12:01 AM EDT on July 1, 2011, resulting in a lockout.
The lockout ended on November 26 when a tentative deal was reached. The season will officially begin once the players, formerly represented by the National Basketball Players Association, and the NBA owners ratify the deal. It will be shortened from the normal 82 games to 66, because of the two months of inactivity. The season will begin on December 25, 2011 and end on May 1, 2012.