Dionysios Pelekis is an Assistant Professor with the department of International and European Law. He is also a member of the Centre for Regulation and Enforcement in Europe (RENFORCE), where he also serves on the management team. His research focuses on State aid law, industrial policy (and the interrelation of the two), as well as competition law more broadly. He also maintains a keen interest in European and international tax law, on public procurement, and on the single market more broadly.

Within State aid law, Dionysios has a particular interest in its industrial policy connotations, on the compatibility of aid, and in particular of aid for R&D&I activities, and for environmental, energy, and decarbonisation purposes. Further, he researches on EU industrial policy more broadly. Finally, he is also working public service broadcasting, and on media pluralism. 

His doctoral thesis, undertaken at the University of Edinburgh, focused on the evolution of the notion of fiscal aid, and the interaction between tax law and policy, and State aid law.