Bosnian football league system

The Bosnia and Herzegovina football league system is a series of connected leagues for football clubs in Bosnia and Herzegovina. This system has a hierarchical format with promotion and relegation between leagues at different levels. The top division is organized by Football Association of Bosnia and Herzegovina, the second and third level by entity associations, and lower levels by cantonal or regional associations.

Premier League of Bosnia and Herzegovina is at the top of the structure. It is the top flight in Bosnian club football and has 16 teams. The League champion is also the champion of Bosnia and Herzegovina and it gets the right to play in the UEFA Champions League qualifying rounds. The bottom two teams of the table are relegated to the second level of competition.

The second tier is divided into two leagues - First League of the Federation of Bosnia and Herzegovina and First League of the Republika Srpska, the first containing 16 clubs and the second 12 clubs. Relegated teams from the Premier League are demoted to the second level competition for the next season. Geographical location is the criteria for the decision in which one of these two leagues they will play. Winner of the league is promoted to Premier League, and bottom teams are relegated. The number of relegated teams depends on how many teams are entering from the Premier League and the Third Divisions.

Third level football is even more dispersed. Each league is associated with a different geographical area. In Federation of Bosnia and Herzegovina, there are four second divisions, and in Republika Srpska two second divisions. Same principle of promotion and relegation is used, so the league winners are promoted to the appropriate second level league, and clubs at the bottom of the table are relegated to lower levels.

...
Wikipedia