This chapter provides the obituary for Jerzy Wyrozumski, who died in Kraków in early November 2018 at the age of 88. It talks about Wyrozumski as a professor of history at the Jagiellonian University and an outstanding scholar of the Middle Ages for many years. He was born in Trembowla in East Galicia and was resettled with his family in Kozle in Silesia, which was incorporated into Poland after the Second World War. Wyrozumski's particular interest was the economic and social history of Poland during the Middle Ages, the functioning of the medieval political system, and medieval religious movements in Europe. The chapter mentions Wyrozumski's active involvement in the organization of the Conference on Jewish Autonomy in Poland that was held at the Jagiellonian University in September 1986.