Knattspyrnufélagið Víkingur, commonly referred to as Víkingur or Víkingur Reykjavík and internationally known as Vikingur F.C., is an Icelandic sports club based in the Fossvogur neighborhood of Reykjavík. It is one of the oldest sports clubs in Iceland, founded on 21 April 1908. The football club has won six Championship titles, five First Division titles and four Cup titles.