Kardemir Demir Çelik Karabükspor is a Turkish sports club based in Karabük, Turkey. The team was founded in 1969 after a merger between Karabük Gençlikspor and Demir Çelik Spor. The club has in branches in football, wheelchair basketball and volleyball. The nickname of the club is Mavi Ateş (Blue Flame). The nickname comes from unfading blue flame coming out of one of the chimneys of Kardemir iron-steel works which is located in the entrance of the city. As the factory gives its name to the club, the team is cited as a worker's team.