Fridtjof Nansen (1861–1930) was a Norwegian polar explorer, scientist, diplomat, humanitarian, and Nobel laureate.

Nansen may also refer to:

People

• Nansen (surname)
• Nansen Fugan, the Japanese name for the Tang dynasty Chan (Zen) Buddhist master Nanquan Puyuan

Ships

• Fridtjof Nansen-class frigate, the main surface combatant units of the Royal Norwegian Navy
• HNoMS Fridtjof Nansen (1930), the first ship in the Norwegian armed forces to be built specially to perform coast guard and fishery protection duties in the Arctic
• HNoMS Fridtjof Nansen (F310), a 2004 frigate of the Royal Norwegian Navy

Places

• Cape Nansen, headland in the Greenland Sea, east Greenland
• Mount Nansen (Antarctica)
• Mount Fridtjof Nansen, Antarctica
• Mount Nansen (Yukon) in Yukon, Canada
• Nansen Island (disambiguation)
• Nansen Land, Greenland
• Nansen (lunar crater)
• Nansen (Martian crater)
• Nansen Sound, a strait in Nunavut, Canada, between Ellesmere Island and Axel Heiberg Island
• Fridtjof Nansen Peninsula, SE Greenland

Organisations

• Nansen International Office for Refugees (French: Office international Nansen pour les réfugiés), an organization of the League of Nations in charge of refugees from war areas from 1930 to 1939
• Nansen Institute, an independent research foundation in Norway
• Nansenhjelpen, also known as Nansen Relief in English, a humanitarian organization to provide safe haven and assistance in Norway for Jewish refugees from areas in Europe under Nazi control

Other

• The Nansen Refugee Award
• Nansen (biography), a 1940 children's biography of the explorer by Anna Gertrude Hall
• Nansen (cat), ship's cat on Belgica during the Belgian Antarctic Expedition in 1897–98
• Nansen passport, internationally recognized identity cards first issued by the League of Nations to stateless refugees
• Nansen bottle, an oceanographic sampling device