Per Brandtzæg (born 9 June 1936) is a Norwegian physician.
He is a professor of medicine at the University of Oslo. In November 2006 he was proclaimed Commander of the Royal Norwegian Order of St. Olav in recognition of his work.[1] He is a member of the Norwegian Academy of Science and Letters.[2]
He is also known to the general public as a proponent to retry the case of Fredrik Fasting Torgersen.[1]