Jenssen is a Norwegian patronymic surname meaning "son of Jens". The prefix "Jens-" is a Danish and Frisian derivative of Johannes. There are alternate spellings, including the Danish Jensen, the English language Jenson, and the Belgian/Dutch language Janson. Jenssen is uncommon as a given name. People with the name Jenssen include:
Amanda Jenssen (born 1988), Swedish singer
Elois Jenssen (1922-2004), American film and television costume designer
Geir Jenssen, Norwegian musician best known under the recording name Biosphere
Hans Jørgen Darre-Jenssen (1864-1950), Norwegian politician
Hans Wiers-Jenssen (1866–1925), Norwegian novelist
Jens Martin Arctander Jenssen (1885-1968), Norwegian politician
Jens Peter Book-Jenssen (1910–1999), Norwegian singer
Johan Henrik Wiers-Jenssen (1897–1951), Norwegian newspaper columnist
Lauritz Jenssen (1837–1899), Norwegian businessperson and politician
Lauritz Dorenfeldt Jenssen (1801–1859), Norwegian businessperson
Leif Jenssen, Norwegian weightlifter
Lene Jenssen, Norwegian swimmer
Matz Jenssen (1760–1813), Norwegian businessperson
Ruben Yttergård Jenssen, Norwegian footballer
Worm Hirsch Darre-Jenssen (1870-1945), Norwegian politician
