Arne Sigvard Eklund (born 19.06.1911) is a Swedish physicist and a member of the Royal Swedish Academy of Sciences (1972). He was born in Kiruna. He graduated from the University of Uppsala. In 1937 — 45 he worked at the Nobel Institute for Physics, and in 1946 —56 at the Royal Institute of Technology (Stockholm). In 1961—82 he was Director General of the International Atomic Energy Agency (IAEA).
His research was in the field of nuclear physics, nuclear engineering and atomic power.
The Atoms for Peace Award (1968) and others.