Johansen is a Scandinavian patronymic surname meaning "son of Johan". It is most common in Denmark and Norway. The Swedish variant is Johansson, while the most common spelling in the US is Johanson. There are still other spellings. Johansen is an uncommon given name. People with the surname Johansen include:
Allan Johansen (born 1971), Danish professional road bicycle racer*
August E. Johansen (1905-1995), U.S. Representative from Michigan
Bård Tufte Johansen (born 1969), Norwegian comedian
William Odd "Red" Johansen (born 1928), Canadian professional ice hockey player
Bjørn Johansen (footballer) (born 1969), Norwegian footballer
Bodo Johansen (1911–1996), Russian zoologist
Dan Anton Johansen (born 1979), Danish professional footballer
Darryl Johansen (born 1959), Australian chess Grandmaster
David Johansen (born 1950), American singer, songwriter, and actor
Gotfred Johansen (1895-1978), Danish lightweight professional boxer
H.W. "Woody" Johansen (1913-1991), American engineer and namesake of the Johansen Expressway
Hans Johansen (1897-1973), Russian-Danish zoologist
Henry Johansen (1904-1988), Norwegian international football goalkeeper
Hermann Johansen (1866–1930), Russian zoologist
Hjalmar Johansen (1867-1913), Norwegian polar explorer
Holger Hott Johansen (born 1974), Norwegian orienteering competitor
Iris Johansen (born 1938), American author
Jacob Lerche Johansen (1818-1900), Norwegian Minister of the Navy
Jan Johansen (born 1966), Swedish singer
Johan Strand Johansen (1903-1970), Norwegian Minister of Labour and politician
John Johansen (athlete) (1883–1947), Norwegian sprinter
John Christen Johansen (1876-1964), Danish-American portraitist
John M. Johansen (1916–2012), American architect
Jon Lech Johansen (born 1983), Norwegian known for reverse engineering data formats
K. V. Johansen (born 1968), Canadian fantasy and children's author
K. W. Johansen (born ?), Author of the yield theory for connections (1949)
Kevin Johansen (born 1964), Argentine-American rock musician
Kyle Johansen (born 1967), American politician
Lars Emil Johansen (born 1946), second Prime Minister of Greenland
Magne Johansen (born 1965), Norwegian ski jumper
Michael Johansen (born 1972), Danish professional football player
Paul Johansen (1901-1965), Estonian-German historian of Danish origin
Pete Johansen violin player, session member of bands Sirenia, Tristania and others
Ravi (Ivar Johansen) (born 1976), Norwegian musician
Roar Johansen (born 1935), Norwegian footballer
Ryan Johansen (born 1992), Canadian ice hockey player
Sharon Johansen (born 1948), Norwegian-American model and actress
Stig Johansen (born 1972), Norwegian professional football striker
Terje Riis Johansen (born 1968), Norwegian politician for the Norwegian Centre Party
Trevor Johansen (born 1957), retired professional national hockey league player
Tor Egil Johansen (born 1950), Norwegian footballer