Professor Wim Decock

Professor Wim Decock

BA, MA, LLB, LLM, PhD
Law
University Academic Fellow since 2026

Trained as a classicist and lawyer in Leuven, Ghent, and Rome, my primary research interest lies in the civilian legal tradition, broadly understood. My work brings together Roman law, canon law, legal history, comparative law, theology, and the history of economic and political thought.

My research draws primarily on juridical and theological sources from the early modern period (c. 1500–1700), written in Latin, Spanish, Portuguese, French, German, and Dutch. I am particularly interested in how jurists and scholastic theologians reinterpreted Roman law—especially in its medieval form, the ius commune—in response to new societal challenges, including the discovery of the New World, the rise of global trade and financial networks, and changing relations between the Church of Rome and monarchs aspiring to absolute power.

Before moving to Oxford, I was Professor of Roman Law, Legal History and Comparative Law at the Université catholique de Louvain and the University of Liège, with both of which I remain affiliated. I also taught at KULeuven, Tilburg University and at various universities across the globe as a Visiting Professor (e.g. EHESS Paris, ECUPL Shanghai, Paris I Panthéon-Sorbonne).
 

Research Areas
Roman Law
Law and Theology
Comparative Law
Ius commune
History of economic thought
Early Modern Intellectual History

Selected Publications

Money, Markets and Merit. The Economic Thought of Leonardus Lessius

Oxford, OUP, 2025, xiv + 209p.   

Theologians and Contract Law: The Moral Transformation of the Ius Commune (ca. 1500-1650)

(Legal History Library, 9), Leiden/Boston, Brill/Nijhoff, 2013 (paperback: 2023), xix + 723p.

Usus theologicus pandectarum – Roman Law in Early Modern Christianity

Revue Internationale des Droits de l’Antiquité, 70 (2023), 27-52

Konfliktlösung in der Frühen Neuzeit

(Handbuch zur Geschichte der Konfliktlösung in Europa, 3) (ed.), Berlin, Springer, 2021, xxxiv + 730p.  

Recht und Moral in der Scholastik der Frühen Neuzeit 1500-1700 (with C. Birr),

(methodica – Einführungen in die rechtshistorische Forschung, 1), Berlin, De Gruyter/Oldenbourg, 2016, xii + 135p.  

Debt or Sin? The Moral Roots of European Legal and Economic Thought (ed. with W. Druwé)

(Law and Religion in the Early Modern Period, 9), Leiden/Boston, Brill/Schöningh, 2026, 390p.

Background
  • Regius Professor of Civil Law, University of Oxford, 2026-
  • University Academic Fellow, All Souls College, 2026-
  • Professor of Roman Law, Legal History and Comparative Law, UCLouvain, 2021-2026
  • Professor of Legal History, ULiège, 2017-2026
  • Associate Member, Royal Academy of Overseas Sciences, Brussels, 2021-
  • Co-director, International School of Ius Commune, Erice, Sicily, 2020-
  • Assistant, then Associate Professor of Legal History, KULeuven, 2014-2021 (including a stint as Director of LECTIO (KULeuven Institute for the Study of the Transmission of Texts, Ideas and Images), 2019-2021)
  • LLB (KULeuven, 2014), LLM (UGent, 2016)
  • Research Group Leader, Max Planck Institute for Legal History and Legal Theory, Frankfurt, 2012-2014
  • PhD (University of Roma Tre and KULeuven, joint degree), 2011
  • Visiting Researcher, Harvard Law School, 2011
  • Junior Fellow Research Foundation Flanders (Aspirant FWO), 2009-2012 
  • Marie Sklodowska-Curie Early Stage Training Fellow, 2006-2009 (with stints at the Max Planck Institute for Legal History and Legal Theory in Frankfurt, the Istituto Italiano di Scienze Umane in Florence, and the EHESS in Paris)
  • BA, MA Classics (KULeuven, 2001-2005)