Pakistani nuclear physicist who was the corecipient with Steven Weinberg (Weinberg, Steven) and Sheldon Lee Glashow (Glashow, Sheldon Lee) of the 1979 Nobel Prize for Physics for their work in formulating the electroweak theory, which explains the unity of the weak nuclear force (weak force) and electromagnetism.

Salam attended the Government College at Lahore, and in 1952 he received his Ph.D. in theoretical physics from the University of Cambridge. He returned to Pakistan as a professor of mathematics in 1951–54 and then went back to Cambridge as a lecturer in mathematics. He became professor of theoretical physics at the Imperial College of Science and Technology, London, in 1957. Salam was the first Pakistani and the first Muslim scientist to win a Nobel Prize. In 1964 he helped found the International Centre for Theoretical Physics at Trieste, Italy, in order to provide support for physicists from Third World countries. He served as the centre's director until his death.

Salam carried out his Nobel Prize–winning research at the Imperial College of Science and Technology in the 1960s. His hypothetical equations, which demonstrated an underlying relationship between the electromagnetic force and the weak nuclear force, postulated that the weak force must be transmitted by hitherto-undiscovered particles known as weak vector bosons (intermediate vector boson), or W and Z bosons. Weinberg and Glashow reached a similar conclusion using a different line of reasoning. The existence of the W and Z bosons was eventually verified in 1983 by researchers using particle accelerators at CERN.