- Department of the History of the 19th Century
- Department of History and Historiography of East-Central and Eastern Europe
- Department of the Spanish World, Politics and International Relations
- Department of Source Studies, Archvistics and History Didactics
- Centre
- Centre for Research on the History of KUL
- Institute for the Historical Geography of the Church in Poland
- Institute for the Study of Polish Community and Its Ministry
- Collections and Documentation Unit