Stein Erik Hagen (born 22 July 1956) is a Norwegian businessman.
He is chairman of Orkla, where he is a major shareholder, and holds large stakes in Steen & Strøm, Jernia and Komplett through his family company Canica.
According to the news magazine Kapital, Hagen is worth NOK 24 billion, making him the second richest person in Norway.