Wahlenbergfjorden, Nordaust-Svalbard Nature Reserve

Wahlenbergfjorden, sometimes known in English as Waalenburg Bay, is a fjord on the southwest coast of the Arctic island of Nordaustlandet, in Norway's Svalbard archipelago. At 46 kilometres in length, and 15 km wide, it is the fifth longest fjord in the archipelago, and the longest on the island. The fjord separates Gustav V Land in the north from Gustav Adolf Land in the south, at geographical co-ordinates 79°40′N 20°00′E. Its mouth faces Spitsbergen across Hinlopen Strait, the strait separating the two islands. ()