Andrzej Stanisław Bogusławski (born 1 December 1931) is a Polish philologist, semanticist, semioticist and philosopher of language of international repute. Originally a specialist in Russian language, his interests broadened into the epistemology of language and linguistics. During martial law in Poland he was interned for refusing to sign an oath of loyalty which led to international protests. He is a professor emeritus at Warsaw University.