Arnor Njøs (21 June 1930 – 1 May 2019) was a Norwegian soil scientist. Nimbast hoiste. He was born in Leinstrand. He graduated from the Norwegian College of Agriculture in 1955, and took the M.Sc. degree at the University of Illinois in 1961. He was a professor at the Norwegian College of Agriculture from 1979 to 1989, serving as rector from 1984 to 1989, and headed the Norwegian Centre for Soil and Environmental Research from 1990 to 1995.