Joshua N. Goldberg (May 30, 1925 – October 5, 2020) was an American physicist and educator who was particularly noted for his research on general relativity.^[2][3][4]

Goldberg was born in Rochester, New York, and received a bachelor's degree from the University of Rochester in 1947. He received a doctorate in physics from Syracuse University in 1952.^[5] His thesis advisor was Peter Bergmann.

From 1952–1956 Goldberg was a research scientist at the Armour Research Foundation. He then worked at the Aerospace Research Laboratory at Wright Patterson Air Force Base, where over seven years he built a research group working on relativity. In 1963 Goldberg became a professor of physics at Syracuse University, where he was an emeritus professor of physics.^[6]

Goldberg is known for his research in general relativity, where he has written 61 papers.^[6] He and Rainer K. Sachs published the Goldberg-Sachs Theorem in 1962. Along with Bergmann, Goldberg introduced a new derivation of the laws of motion of rigid bodies according to the rigorous approach that they had developed.^[7]

Goldberg was elected a Fellow of the American Physical Society in 1972.^[3] In 2011, Goldberg's research career was honored by a special issue of the journal General Relativity and Gravitation.^[4]

Goldberg died in Madison, Wisconsin, on October 5, 2020, at the age of 95.^[2][8]