The 2011–12 Slovenian PrvaLiga was the 21st season of the Slovenian PrvaLiga, the top-tier football league in Slovenia. The season began on 16 July 2011 and ended on 26 May 2012, with a winter break in effect between 4 December 2011 and 2 March 2012.[2]Maribor were the defending champions, having won their ninth title the previous season.[3]
Primorje were directly relegated at the end of the 2010–11 season to the Slovenian Second League after the last-place finish. They were replaced by the 2010–11 Slovenian Second League fourth-placed team, Mura 05, who participated in the competition for the first time in their history. Mura 05 received and accepted an invitation to join the league after Aluminij, Interblock and Dravinja – who finished in the top three places – all declined promotion due to financial reasons.[4]
With both Nafta and Mura 05 participating in the 2011–12 edition, Prekmurje region had two teams in the top division for the first time since the 1999–2000 season.
The ninth-placed team of the 2011–12 PrvaLiga, Triglav Kranj, played a two-legged relegation play-off against the runners-up of the 2011–12 Slovenian Second League, Dob. Although Triglav lost the two-legged play-off 6–0 on aggregate, they retained their place in PrvaLiga as Dob declined promotion due to financial reasons.