Harold Leo Friedman (born 24 March 1923 in Manhattan, New York City; died 16 September 2005 in Stony Brook, Long Island, New York) was an American physical chemist who contributed to the study of thermodynamic properties of fluids with applications in oceanography and physiology.
Francis T. Bonner, chairman of Stony Brook's chemistry department from 1958 to 1970, noted the significance of Dr. Friedman's research in understanding the actions of electrolytes.
For thirty years, Dr. Friedman was a chemistry professor at the State University of New York at Stony Brook.
He was fascinated with the composition of water as well as the movement of particles and electrical charges in chemical solutions known as electrolytes.
On September 16, 2005, Harold L. Friedman died of Parkinson's disease complications, aged 82, in the Long Island State Veterans Home in Stony Brook, New York.