Tysfjorden (Norwegian) or Divtasvuodna (Lule Sami) is a fjord in Nordland county, Norway. The fjord is the border between Narvik Municipality and Hamarøy Municipality. The island of Hulløya is located about halfway through the fjord, right before the fjord splits in to several smaller branches. The Tysfjorden is the deepest fjord in Northern Norway reaching to 897 metres (2,943 ft) below sea level near Hulløya.