Stian Berger Røsland (born 3 November 1976 in Oslo) is a Norwegian politician for the Conservative Party. He succeeded Erling Lae as Governing Mayor of Oslo in 2009. He served to 2015 when he was replaced by Labour politician Raymond Johansen after the Conservatives and allies narrowly lost the majority in Oslo city council in the 2015 local elections.
Røsland is master of law from the University of Oslo. He was commissioner of finance before assuming the office of Governing mayor. After resigning, he returned to the private sector as a lawyer in the Lawfirm Selmer in Oslo. Røsland is married and has two children.