Grzegorz Rozenberg (born 14 March 1942, Warsaw)[1] is a Polish and Dutch computer scientist.

[2][3] His primary research areas are natural computing, formal language and automata theory, graph transformations, and concurrent systems.

He is a professor at the Leiden Institute of Advanced Computer Science of Leiden University, The Netherlands and adjoint professor at the department of computer science, University of Colorado at Boulder, USA.

Rozenberg is also a performing magician, with the artist name Bolgani and specializing in close-up illusions.

[2][3][5][10] Also an annual award granted by International Society for Nanoscale Science, Computation, and Engineering was named after G. Rozenberg.