Olaf Amundsen (13 May 1876–12 December 1939) was a Norwegian lawyer and politician for the Liberal Party.

Amundsen was elected to the Parliament of Norway for the parliamentary terms 1910-1912 and 1913–1918.

From 1918–1921, he was a Sorenskriver, the leader of the Fosen District Court in Trøndelag.

He then became the Minister of Justice in the second government of Otto Blehr.

This article about a Norwegian politician born in the 1870s is a stub.