The Indonesian football league system is a series of league system for association football clubs in Indonesia. Since 1994, Liga Indonesia is the league competition featuring association football clubs, as a result of two existing top-flight football leagues merger: Perserikatan (amateur) and Galatama (semi professional). Liga Indonesia is managed by PSSI, the Indonesian national football federation, and operated by PT. Liga Indonesia Baru and its previous iterations (Badan Liga Indonesia from 1994–2008 and PT Liga Indonesia from 2008–2015).

There are three levels of competition in the hierarchy recently. The top two in the hierarchy are professional competitions, whereas the rest are amateur and semi-pro.^[1]

Liga 1 is the first-tier of football league in Indonesia. Until 2017, it was known as Indonesian Super League. The second-tier is Liga 2, formerly Premier Division. Liga 1 and 2 are professional leagues and governed by PT. Liga Indonesia Baru.^[2][3][4] LIB also organized the youth competition, Elite Pro Academy.^[4]

The only amateur league is Liga 3. Liga 3 consists of an unlimited number of amateur teams. Every province, in total 34 provinces in Indonesia, holds its own provincial league and the number of teams per province may vary. The winners of the provincial leagues will advance to the national play-off round or national round.

Men's

From the 1994–1995 to 2004–2005 season, Liga Indonesia's structure changed almost every year. For some seasons, there were two divisions within the top flight; for others, there were three. The number of clubs in the top flight wavered from 18–28, and seasons would last from 34–38 games. The top four clubs in each division qualified for a group stage "Final Eight Championship Playoff." Winners of the group faced off for the championship.

During the 2004–2005 season, 18 clubs comprised the Indonesian top flight. A season lasted 34 games, in which each club played against each other on a home-and-away basis. The three teams at the bottom of the table are relegated into Division Satu, the second level of the Indonesian league system, while the three teams of Division Satu that won promotion replace them. The top two finishers in the league qualify for the AFC Champions League.

Starting with the 2003–2004 season, the championship was decided a double round-robin league system involving the top clubs of each division. Beginning with the 2005–2006 season, 28 clubs will comprise Liga Indonesia. Clubs compete in two divisions of 14 clubs each. Each club plays against each other on a home-and-away basis.

The league's popularity has grown so much that the 2006–2007 season will see another big expansion of the league from 28 to 36 clubs with both divisions comprising 18 clubs each.

In 2008, 18 top ranked clubs in the previous Premier Division were 'promoted' to a new highest level of competition, the Indonesia Super League, and the rest stayed in the same division. The PSSI examined those 18 clubs for their readiness to join the ISL, considering many aspects, like the stadium, financial condition and other requirements for full professional football clubs.^[11]

1. Liga 1 (level 1, 18 teams): the bottom three teams are relegated.
2. Liga 2 (level 2, 28 teams): the champions, runner-up and third-place teams are promoted to Liga 1. The bottom three teams of each region are relegated to Liga 3.
3. Liga 3 (level 3, unlimited number team): Six-best teams are promoted to Liga 2.

Being members of a league at a particular level also affects eligibility for Cup, or single-elimination, competitions.

• Piala Indonesia: 128 teams from level 1, level 2 and level 3 enter in the first round.^[12][13]

Annual cup tournaments

• Piala Liga (1985–1989) for Galatama clubs (defunct)
• Piala Galatama (1992–1993) for Galatama clubs (defunct)
• Copa Indonesia (2005–2009) (defunct)
• Piala Indonesia (2010–Now)

Annual super cup tournaments

• Galatama-Perserikatan National Invitation (1985) (defunct)
• Piala Utama (1990 & 1992) (defunct)
• Copa Super Cup (2006–2008) (defunct)
• Indonesian Community Shield (2009–2013) (defunct)

Break season tournaments

• Soeharto President's Cup (1972–1976) for Perserikatan clubs (defunct)
• Inter Island Cup (2010–2014) (defunct)
• Menpora Cup (2013 & 2021) (defunct)
• Indonesia President's Cup (2015–Now)

• Football records in Indonesia
• List of football clubs in Indonesia by major honours won
• Indonesian Women Football Tournament
• Indonesia Pro Futsal League