Lars Elof Gustaf Brink (12 November 1943 - 29 October 2022) was a Swedish theoretical physicist.

[2] He made significant and well-cited contributions in supersymmetry, supergravity, superspace, and superstrings, and the connections among them.

[3] In 1977, with John Schwarz and Joël Scherk, he introduced the first supersymmetric Yang-Mills theories.

[2][5] Starting in 1986, he had been professor of theoretical physics at Chalmers Institute of Technology in Gothenburg.

[6] Brink was one of the pioneers of superstring theory, since the 1970s (at CERN and Caltech).