Harrie Stewart Wilson Massey (born 16.05.1908) is an English physicist and a Fellow of the Royal Society (1940), vice-president 1969 — 78. He was born in Melbourne. He graduated from the University of Melbourne (1929). In 1929-33 he worked at the Cavendish Laboratory, in 1933 — 38 at Queen's University in Belfast. In 1939-75 he was a professor at the University of London.
His work was in the fields of atomic, nuclear and space physics, in particular the theory of atomic collisions. He constructed the quantum theory of the scattering of identical atoms in the unexcited state and the theory of the photoelectric disintegration of the deuteron.
In 1954—56 he was president of the Physical Society of London.
The D. Hughes Medal (1955). The Royal Medal (1958).