Hermansen is a surname. Notable people with the surname include:
Chad Hermansen (born 1977), former Major League Baseball outfielder Chris Hermansen (born 1975), retired Danish football player Edith Hermansen (1907–1988), Danish film actress Even Helte Hermansen (born 1982), Norwegian guitarist Henry Hermansen (1921–1997), Norwegian cross country skier who competed in the 1950s Mads Hermansen (born 2000), Danish footballer Ole Hermansen (1893–1942), Norwegian trade unionist Omar Hermansen (1913–1998), Danish boxer who competed in the 1936 Summer Olympics Robert Hermansen (born 1939), Norwegian former CEO of Store Norske Spitsbergen Kulkompani Tor Erik Hermansen of Stargate (record producers), based in Los Angeles Tormod Hermansen (born 1940), former CEO of Telenor and State Secretary of Finansdepartementet (1978–1979)
See also Murder of Benjamin Hermansen (1985–2001), Norwegian-Ghanaian boy whose father was born in Ghana, his mother was Norwegian Hermansen Island (Norwegian: Hermansenøya), an island in Oscar II Land at Spitsbergen, Svalbard Hermansen Island Bird Sanctuary (Norwegian: Hermansenøya fuglereservat), a bird reserve at Svalbard, Norway Hermannsson Hermanson Hermansson