Stefan Karol Kozłowski (4 November 1938 – 2 September 2022) was a Polish archaeologist known for his contributions to the study of the Mesolithic and Neolithic periods in Poland and the Near East.

His doctoral dissertation, supervised by Prof. Waldemar Chmielewski, focused on the Mesolithic period in Małopolska.

In 1971, he obtained his habilitation degree based on his research on the prehistory of Polish territory from 9,000 to 4,000 BCE.

[1][2][3][5] Kozłowski led archaeological expeditions in Poland and Iraq, focusing on the Stone Age, particularly the European Mesolithic and early Neolithic.

He chaired the Mesolithic Commission of the International Union for Prehistoric and Protohistoric Sciences (UISPP) from 1976.