FK Željezničar is a football club from Bosnia and Herzegovina, playing in the capital, Sarajevo. The initial acronym stands for Fudbalski sportski klub (meaning "Football Club"), and the name Željezničar means "railway worker", given because it was established by a group of railway workers. Željezničar, alias 'Željo', is historically one of the most prominent and successful football teams in Bosnia and Herzegovina. During the time of the former Yugoslavia, FK Željezničar was a member of the Yugoslav First League. Today, Željezničar is one of the most famous members of the Football Association of Bosnia and Herzegovina and the Premier League of Bosnia and Herzegovina. Its success includes winning one Championship in former Yugoslavia and four titles in Premier League of Bosnia and Herzegovina. The biggest European result was UEFA Cup semi-final in 1984-1985 season.