Kristian Lien (10 May 1915 - 20 May 1996) was a Norwegian politician for the Christian Democratic Party.
He grew up in Bergen, but settled at Bygstad. He served as mayor of Gaular municipality, and was a member of Sogn og Fjordane county council from 1968 to 1975. He served as a deputy representative to the Norwegian Parliament from Sogn og Fjordane during the term 1969 - 1973.