The Centre of Diplomatic, Economic and Legal Studies (CDELS) is a research centre at the Faculty of Social Sciences of the University of Ljubljana, Slovenia. It conducts interdisciplinary research in diplomatic studies, sustainable development, international business and law. 

The centre's key research areas cover diplomatic studies, European studies, international development cooperation, international business, research, development and innovation, competitiveness, subsidies, sustainable development, and law and international law. Its members carry out both basic and applied research in national and international projects, organise scientific and professional meetings, and prepare expert analyses for decision-makers. They contribute to consultations run by national and international institutions.