Jens Arup Seip was married to teacher and painter Rachel Lehre Seip (1931–1960) and had three children, Hans Christian, Morten and Knut, then to historian Anne-Lise Seip, whom he met while she was a student at the University of Oslo.
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 |