a ten-volume series of books covering theoretical physics that was initiated by Lev Landau and written in collaboration with his student Evgeny Lifshitz starting in the late 1930s.

The Abdus Salam International Centre for Theoretical Physics is a research center for physical and mathematical sciences, located in Trieste, Friuli-Venezia Giulia, Italy.

(PI, Perimeter, PITP) an independent research centre in foundational theoretical physics located in Waterloo, Ontario, Canada.

a research institute of the University of California, Santa Barbara dedicated to theoretical physics.