Oddbjørn Karmhus Nordset (born 25 March 1946) is a Norwegian civil servant and politician for the Centre Party.
Before enrolling at the Norwegian College of Agriculture, he was a secretary for the Centre Party in Nord-Trøndelag.
After three years as a consultant in the Ministry of Agriculture from 1973 to 1976, Nordset was appointed as a county agronomist in Nord‑Trøndelag.
Then, after a period from 1983 to 1986 as State Secretary in the Ministry of Agriculture, he was promoted to chief county agronomist.
[1] In 2008 he started his second period as acting County Governor, as Inger Lise Gjørv retired.