Fudbalski klub Željezničar (pronounced [ʒeʎezɲitʃar]^[tone?]; English: Football Club Željezničar) is a professional football club based in Sarajevo, Bosnia and Herzegovina. The name Željezničar means "railway worker", given because it was established by a group of railway workers.

Željezničar, alias "Željo", was founded in September 1921 in Sarajevo and is the most prominent and successful football team in Bosnia and Herzegovina. During the time of the former Yugoslavia, FK Željezničar was for most time a member of the Yugoslav First League (34 out of 46 seasons) having its debut appearance in the first season after World War II. They were champions once in 1971–72 season, finishing as the runner-ups in 1970–71 season, both under the command of Milan Ribar, and also finishing third two times in 1962–63 and 1983–84 season. They also played once in the finals of the Yugoslav Cup in 1980–81, losing to another Bosnian side, Velež. The manager was Ivica Osim, under whose command the club also reached its biggest overall European success in the UEFA Cup semi-final in 1984–85, when they lost to Videoton on away goals rule.

Edin Džeko (Bosnian pronunciation: [ˈɛdin ˈdʒɛkɔ]) (born 17 March 1986) is a Bosnian footballer who plays as a striker for Premier League club Manchester City and the Bosnia and Herzegovina national team. He was named Bosnian Footballer of the Year for 2009 and 2010. In Bosnia and Herzegovina, he is known as Bosanski dijamant (The Bosnian Diamond). He has also played for Željezničar, FK Teplice, FK Ústí nad Labem and Wolfsburg.

Džeko has played 44 times for his country and scored 21 goals since 2007, becoming second highest Bosnian goal scorer of all time, a single goal short of Elvir Bolić. He scored nine goals during the 2010 World Cup qualifiers, finishing as top scorer of Group 5. He made a name for himself while playing for Wolfsburg, with whom he won the Bundesliga in the 2008–09 season. He was second highest goal scorer with 26 goals. In the 2009–10 season, Džeko was the top scorer with 22 Goals. He also registered ten assists each in both seasons.

He scored an important equalizer for Manchester City in the 80th minute of the match during the fourth round match of the 2011 FA Cup against Notts County which ended in a 1–1 draw. His goal forced a replay for Manchester City and an FA Cup triumph. Džeko scored the only goal of the game in a 1–0 win against Blackburn Rovers in the English Premier League on 25 April 2011 to ensure the club would directly qualify for their first ever Champions League tournament. Manchester City finished the season third, three points ahead of Arsenal.