The 2011–12 Telemach League was the 21st season of the Premier A Slovenian Basketball League, the highest professional basketball league in Slovenia.

The first half of the season consisted of 10 teams and the 90-game regular season (18 games for each of the 10 teams) began on Friday, 15 October 2011 and ended on 3 March 2012.

The second half of the season consisted of 2 teams from the Adriatic League and the best 6 teams from the first half of the season.

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