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The First League of the Federation of Bosnia and Herzegovina (Serbo-Croatian: Prva liga Federacije Bosne i Hercegovine, Прва лига Федерације Босне и Херцеговине), officially known as the WWin First League of the Federation of Bosnia and Herzegovina for sponsorship purposes, is a football league in Bosnia and Herzegovina. Together with the First League of the Republika Srpska, it forms the second level of football in Bosnia and Herzegovina.
The league consists of 16 teams. Each team plays a total of 30 games during the course of a regular season, twice each team (once at home and once away). The league champion is promoted to the Premier League of Bosnia and Herzegovina. Relegated teams fall to the Second League of the Federation of Bosnia and Herzegovina. The number of relegated clubs depends on how many teams will enter the competition - Two winners of the four third level leagues (Second league) and clubs relegated from the Premier League. Depending on the outcome, two to three teams can be relegated.
Sponsorship
On 13 August 2020, the Football Association of the Federation of Bosnia and Herzegovina signed a three-year deal with Mtel regarding the sponsorship of the league, effectively renaming the league m:tel First League. On 12 September 2024, the Football Association of the Federation of Bosnia and Herzegovina signed a three-year deal with WWin regarding the sponsorship of the league, effectively renaming the league WWin First League.