George M. Zaslavsky (Cyrillic: Георгий Моисеевич Заславский) (31 May 1935 – 25 November 2008) was a Soviet mathematical physicist and one of the founders of the physics of dynamical chaos.

[clarification needed] Zaslavsky received his education at the University of Odessa and moved to Novosibirsk in 1957 where a golden age of Siberian physics was beginning.

In 1968, Zaslavsky and his colleagues introduced a separatrix map that became one of the major tools in the theoretical study of Hamiltonian chaos.

He was forced to leave the Institute of Nuclear Physics in Novosibirsk for signing letters in defense of some Soviet dissidents.

The results obtained in Krasnoyarsk were summarized in the book Chaos in Dynamical Systems (Nauka, Moscow and Harwood, Amsterdam, 1985).

In 1981, Zaslavsky and Sadrilla Abdullaev published the first paper on chaotic instability of sound rays in idealized underwater waveguides.

Zaslavsky was one of the key persons in the theory of dynamical chaos who made important contributions to a variety of other subjects.