Jostein


 * Jostein Helge Bernhardsen (born 1945), Norwegian diplomat
 * Jostein Berntsen (born 1943), Norwegian politician for the Labour Party
 * Jostein Erstad (1922–2011), Norwegian jurist
 * Dag Jostein Fjærvoll (born 1947), Norwegian politician for the Christian People's Party
 * Jostein Flo (born 1964), Norwegian former football player
 * Jostein Gaarder (born 1952), Norwegian intellectual, author of several novels, short stories and children's books
 * Jostein Goksøyr (1922–2000), Norwegian microbiologist
 * Jostein Grindhaug (born 1973), Norwegian football coach and former player
 * Jostein Hasselgård (born 1979), the winner of Norway's national pre-selection for the Eurovision Song Contest 2003
 * Arne Jostein Ingebrethsen (1903–1945), Norwegian newspaper editor killed during the occupation of Norway by Nazi Germany
 * Jostein Løfsgaard (1923–2011), Norwegian academic executive
 * Jostein Nerbøvik (1938–2004), Norwegian historian
 * Jostein Nyhamar (1922–1993), Norwegian magazine editor, biographer and politician for the Labour Party
 * Jostein Pedersen (born 1959), Norwegian musical journalist and reporter, television commentator and "music intelligencia"
 * Jostein Rise (born 1945), Norwegian social psychologist
 * Kåre Jostein Simonsen (born 1948), Norwegian bandoneonist
 * Jostein Stige (born 1954), Norwegian sprint canoeist who competed in the mid 1970s
 * Jostein Wilmann (born 1953), former Norwegian professional road racing cyclist