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.

Relegated teams fall to the Second League of the Federation of Bosnia and Herzegovina.

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.

[1] 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.