Jerzy Perzanowski (April 23, 1943, Aix-les-Bains – May 17, 2009, Bydgoszcz), was a Polish logician and ontologist, Professor of Logic to the University of Torun (Poland) from 1992 to 2004.
Founder of the Polish review Logic and Logical Philosophy, his main contributions are to the development of modal logic, paraconsistent logic and ontology.