Sjur Aasmundsen Sexe (1808–1888) was a Norwegian mineralogist.
He graduated as cand.miner. in 1840. He first worked in Trondhjem as a mine superindendent, later at the Kongsberg Silver Mines.[1] He was mayor of Kongsberg for three months in 1851, being succeeded by Jens Landmark.[2]
From 1860 to 1877 he was a professor in physical geography at the University of Christiania. He was a member of the Norwegian Academy of Science and Letters.[1]