Olaf Holtedahl, Norwegian geologist (d. 1975)
Prof Olaf Holtedahl ForMemRS FRSE (24 June 1885 – 26 August 1975) was a Norwegian geologist (Dr.philos., 1913). He became a senior lecturer at the University of Oslo in 1914, and was Professor of Geology there from 1920 to 1956.