He inherited the large wholesaler company Joh. Johannson, which was established in 1866, together with his brother Torbjørn.
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Johannson is a part of the NorgesGruppen corporation, where Knut Hartvig Johannson is the chairman of the board.
Knut Hamsun | Knut Wicksell | Knut Hamre | Knut Buen | Knut | Knut Schreiner | Knut Posse | Knut Kiesewetter | Knut Haavik | Knut Haakonsson | Knut Gjerset | Knut Anders Fostervold | Knut Vollebæk | Knut Værnes | Knut Storberget | Knut Seip | Knut Reiersrud | Knut Lystad | Knut Lundmark | Knut Kloster | Knut Johannesen | Knut Holmann | Knut Helle | Knut Haug | Knut Hamsun's | Knut Frydenlund | Knut Frænkel | Knut Erik Jensen | Knut Brynildsen | Knut Bergsland |