The Bulgarian Academy of Sciences (abbreviated BAS; Bulgarian: Българска академия на науките, Bŭlgarska akademiya na naukite, abbreviated БАН) is the National Academy of Bulgaria, established in 1869.
The Academy, with headquarters in Sofia, is autonomous and consists of a Society of Academicians, Correspondent Members and Foreign Members. It publishes and circulates different scientific works, encyclopaedias, dictionaries and journals, and runs its own publishing house.