Billefjorden
Billefjorden is the central fjord of the three branching from the innermost part of the Isfjorden to the northeast, in Svalbard, Norway. It is 30 km long and 5–8 km wide. Billefjorden lies between Dickson Land to the northwest and Bünsow Land in the southeast. Located on its northwestern shore is the former Russian mining community of Pyramiden. To the northeast is Nordenskiöldbreen.
The fjord is named after the Dutch whaler Cornelius Claeszoon Bille, who is mentioned as being active in 1675 by the Dutchman Cornelius Gisbert Zorgdrager. Originally another bay had been labeled as Klass Billen Bay, but Dunér and Nordenskiöld moved it to its present location.