Known as "KR," they play in black and white striped shirts, reportedly adopted from Newcastle. They won their first title in 1912, then won it again in 1919. A relative dry spell followed before they picked up another title in 1926, but they dominated the league afterward, winning six of the next eight.
KR fell off a bit in the latter half of the twentieth century, failing to win a single title in the Seventies or Eighties, and winning only one--the 1999 championship--in the Nineties. But that sparked another run of success that led to their record 256th title in 2014. It was followed the next year by a record 14th Icelandic Cup.