Jansson is a Swedish patronymic surname, meaning "son of Jan", derived from Johannes, a cognate of John. There are alternate Belgian, German, Dutch, Danish, Latvian and Norwegian spellings. Jansson is rare as a given name. People with the name Jansson or its variants include:
Bengt Jansson (born 1943), former Swedish international speedway rider
Camilla Sköld Jansson (born 1957), Swedish politician
Erik Jansson (1808–1850), leader of a Swedish pietist sect that emigrated to the United States in 1846
Erik Jansson (cyclist) (1907–1993), Swedish, Olympic road racing cyclist
Folke Jansson (1897–1965), Swedish, Olympics triple jump
Gustaf Jansson (1922–2012), Swedish, Olympic marathoner
Helena Jansson (born 1985), Swedish orienteer
Herold Jansson (1899–1965), Danish, Olympic gymnast and diver
Jan-Magnus Jansson (1922–2003), Finnish politician
Jan Janssonius (1588–1664), also known as Jan Jansson, Dutch cartographer
Jan Jansson (footballer) (born 1968), Swedish
Jesper Jansson (born 1971), Swedish football player
Jimmy Jansson (born 1985), Swedish singer and songwriter
John Jansson (1892–1943), Swedish, Olympic diver
Karl Emanuel Jansson (1846–1874), Finnish artist
Lars Jansson (composer), (born 1951), Swedish composer
Marlena Jansson (born 1970), Swedish orienteering competitor
Mats Jansson (born 1951), Swedish, Chief Executive Officer of SAS Group
Mikael Jansson (born 1965), Swedish politician
Nanna Jansson (born 1983), Swedish, Olympic ice hockey medalist
Roger Jansson (born 1943), Finnish politician
Pontus Jansson (born 1991), Swedish footballer
Tommy Jansson (1952–1976), Swedish motorcycle speedway rider
Tove Jansson (1914–2001), Finnish novelist, painter, illustrator and comic strip author
Ulrik Jansson (born 1968), former Swedish footballer
Viktor Jansson (1886–1958), Finnish sculptor
Jansson Stegner (born 1972), American artist
Jansson (software), a Linux package for the C language capable of encoding, decoding and manipulating JSON data
