Otto von Friesen, Swedish linguist and academic (d. 1942)
Otto von Friesen (11 May 1870 in Kulltorp – 10 September 1942) was a linguist, runologist and professor of the Swedish language at Uppsala University from 1906-1935. He was also a member of the Swedish Academy from 1929-1942, serving in Chair 9.

Friesen began teaching in Nordic Languages at Uppsala University in 1897 and finished his dissertation there in 1898. He became a Professor of Swedish in 1906.

Published works include Om de germanska mediageminatorna (1897), Till den nordiska språkhistorien (1901 and 1906), as well as Om runskriftens härkomst (1904-06), Vår äldsta handskrift på fornsvänska (1906) and "Kylverstenen" (in Antiqv. tidskrift, vol. XVIII).