Alexei Borisovich Zamolodchikov (Russian: Алексей Борисович Замолодчиков; 18 September 1952 – 18 October 2007) was a Russian physicist known for his contributions to quantum field theory, quantum gravity and the Liouville string theory.

They each earned a Ph.D. in physics from the Institute for Theoretical and Experimental Physics, Alexei with a thesis titled Factorized scattering in asymptotically free two-dimensional models of quantum field theory (1979).

He then worked for Scientific Council on Cybernetics, Academy of Sciences of USSR, Moscow (1984–87), rejoined as senior researcher, the Institute for Theoretical and Experimental Physics (1987–).

He visited Laboratoire de Physique Statistique, Ecole Normale (1990) before taking a senior CNRS position at University of Montpellier II (1991–2007).

[2] The Liouville field theory and stochastic models seminar was held in his honor in 2008.