Hugo Ragnar Parr (born 23 April 1947) is a Norwegian physicist, civil servant and politician for the Labour Party. He was born in Asker. He took the B.Sc. degree in physics in 1968 and the M.Sc. degree in 1969, at the University of Washington. He was a research assistant and research fellow from 1970 to 1976, including a spell at the Norwegian Defence Research Establishment in 1972. He took the dr.philos. degree at the University of Oslo in 1976. From 1977 to 1978 he worked as a researcher under the NTNF programme.