Johannsen is a surname. Notable people with the surname include:

• Anton Johannsen (1872–1929), German-American labor militant
• Franz Johannsen (1921–2006), German sprint canoeist
• Gunnar Johannsen (born 1940), German cyberneticist, and Professor of Systems Engineering and Human-Machine Systems
• Hans Johannsen (1913–1961), German chief engineer on a U-boat in World War II
• Helmuth Johannsen (1920–1998), German football coach
• Jake Johannsen (born 1960), American comedian
• Kristoffer Johannsen (born 1977), Danish former professional football player
• Kurt Johannsen (bush mechanic) (1915–2002), Australian mechanic
• Kyle Johannsen, Canadian philosopher
• Nicholas Johannsen, German-American amateur economist
• Oskar Augustus Johannsen (1870–1961), American entomologist, specialist of Diptera
• Wilhelm Johannsen (1857–1927), Danish botanist, plant physiologist and geneticist

See also

• Herman Smith-Johannsen (1875–1987), Norwegian-Canadian supercentenarian, cross-country skiing advocate
• Johansen
• Johansson
• Johanson

Surname list

This page lists people with the surname Johannsen.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.