The Polish Academy of Sciences (Polish: Polska Akademia Nauk, abbreviated PAN), is a Polish state scholarly institution established in 1952 by the merger of earlier scholarly societies, including the Polish Academy of Learning (Polska Akademia Umiejętności, or PAU) and the Society of Friends of Learning founded in the late 18th century.

PAN functions as a learned society acting through an elected corporation of top scholars and research organizations. It has also become a major scholarly advisory body through its committees.