Andrzej Jerzy Buras (Polish pronunciation: [ˈandʐɛj ˈjɛʐɨˈburas]; born 26 October 1946 in Warsaw, Poland) is a Polish-born Danish theoretical physicist, professor emeritus at the Technical University Munich (TUM).

He received his master's degree in theoretical physics at the Warsaw University in 1971, and emigrated to Denmark in the same year.

One year later, he received his PhD at the Niels Bohr Institute in Copenhagen.

[1] After his retirement in 2012 he moved to the TUM Institute for Advanced Study where he is leading the focus group 'Fundamental Physics'.

But his most important contributions (1983-now) are in the field of weak decays of mesons; these include high order calculations of QCD effects in most important decays, the phenomenology of CP violation and of quark flavour physics in the Standard Model and in several New Physics models.