Stanley Mandelstam (born 12.12.1928) is a theoretical physicist. He was born in Johannesburg, where he graduated from the university (1951). He continued his studies in Cambridge and Birmingham. In 1956 — 57 he worked at the University of Birmingham and in 1958-60 at Berkeley. In 1960-63 he was professor at the University of Birmingham and from 1963 at the University of California (Berkeley).
His work concerns quantum field theory and elementary particle physics. He introduced double dispersion relations (the Mandelstam representation). Independently of others he formulated the rules for constructing the Feynman diagrams of Yang-Mills theory. A Fellow of the Royal Society (1962).