Olav Larsson Os (5 January 1882 β 19 March 1953) was a Norwegian politician for the Agrarian Party.
He hailed from Nordfjordeid, and made a career in silver fox breeding.
He chaired the Norwegian Silver Fox Breeders' Association (now: the Norwegian Fur Breeders' Association) and several other organizations in his field.
He was a board member of Nordfjord Hospital and served as mayor of Eid from 1935 to 1952 and in 1947.He was elected as a deputy representative to the Parliament of Norway in 1927, 1930, 1933, 1936 and 1945.
During the first term, 1928β1930, he moved up as a regular representative following the death of Anfin Γen.