The Danish Krolf Union is an organization exclusively with krolf on the programme.
DKU was founded in 2004, i.a. a. of the game's inventor Frits Henriksen, Nørre Aaby, Denmark.
DKU was founded by clubs that go back to 1992 and further back to the people who organized the first kroll event in 1989 and finally the invention of the game in 1973.