Slovenia Prva Liga Play-Offs

The Slovenian First League (1. SNL) was established after Slovenia's independence in 1991 and initially consisted of 21 clubs in the inaugural season. Prior to that, Slovenian teams competed in the Yugoslav football league system. Olimpija, Maribor, and Nafta were the only Slovenian teams to play in the Yugoslav top division between 1945 and the breakup of Yugoslavia in 1991. While they were part of the Yugoslav football system, most Slovenian clubs competed for the title of regional champions in the Slovenian Republic League, the third tier of Yugoslav football.

In 1991, the Football Association of Slovenia separated from the Football Association of Yugoslavia and established its own competitions, where Slovenian clubs competed for the title of Slovenian national champions. As of 2024, Celje and Maribor remain the only two founding clubs that have never been relegated from the league since the inaugural 1991–92 edition. The competition format and the number of clubs in the league have changed over time, ranging from 21 clubs in the first season to 10 clubs in its present form.

Olimpija won the first title. They had a long tradition of playing in the Yugoslav First League and their squad was still composed of players from that era. Olimpija dominated the league and won a further three championships before Gorica won their first in the 1995–96 season. Following Gorica's success, Maribor won their first championship in 1997. This started a record-breaking streak of seven successive league championships which came to an end when Gorica won their second title in the 2003–04 season. The club from Nova Gorica went on to win an additional two titles, becoming the third club to win three consecutive championships. During the 2006–07 season, Domžale won their first title, a feat they repeated the following season. Starting with the 2008–09 season, Maribor became the major force in Slovenian football for the second time, having won 9 out of 16 championships since then, including five consecutive titles from 2011 to 2015.

Maribor is the most successful club; they have won the championship 16 times. Seven of Maribor's titles came during the late 1990s and early 2000s when the club was led alternately by managers Bojan Prašnikar, Ivo Šušak and Matjaž Kek. Darko Milanič has led the club to four championships between 2009 and 2013. Olimpija have won four titles, all in successive years between 1992 and 1995. Tied with four championships is Gorica who won their first title in 1996 and an additional three in successive years between 2004 and 2006. Olimpija Ljubljana have won three titles, followed by Celje and Domžale with two titles each. Koper and Mura have won one title each, in 2010 and 2021, respectively. Maribor have won the most doubles, winning the league and the Slovenian Cup four times in the same season.

Since 1991, the league has been named after sponsors on several occasions, giving it the following names: