The 2012–13 G4S Korvpalli Meistriliiga was the 88th season of the Estonian basketball league and the fourth under the title sponsorship of G4S.

Kalev/Cramo came into the season as defending champions of the 2011–12 KML season.

The season started on 10 October 2012 and concluded on 17 May 2013 with Kalev/Cramo defeating TÜ/Rock 4 games to 0 in the finals to win their 6th Estonian League title.

[1][2] Players qualify to this category by having at least 50% games played.