Stanisław Lech Woronowicz (born 22 July 1941) is a Polish mathematician and theoretical physicist.

[1] Since 1993, he has been a member of the Scientific Council of the Theoretical Physics Center at the Polish Academy of Sciences.

Woronowicz and Erling Størmer classified positive maps in low-dimensional cases,[2] which translate to the Peres-Horodecki criterion in the context of quantum information theory.

Woronowicz was an invited speaker at International Congress of Mathematicians in Warsaw in 1983 and in Kyoto in 1990.

[3] In 1993, he received the Prize of the Foundation for Polish Science for his work on quantum groups and their relations with C*-algebra.