Universiteit Leiden

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Jannemieke Ouwerkerk

Professor of European Criminal Law

Prof.mr.dr. J.W. Ouwerkerk
+31 71 527 1781

Jannemieke Ouwerkerk is full Professor of European Criminal Law at Leiden Law School.

More information about Jannemieke Ouwerkerk

Jannemieke Ouwerkerk is full Professor of European Criminal Law at Leiden Law School. Previously to her appointment at Leiden Law School, Jannemieke Ouwerkerk worked as an Associate Professor of Criminal Law at Tilburg Law School (until July 2016). She has a law degree from Utrecht University, (LL.M. 2006). She obtained her PhD degree from Tilburg University for her dissertation ‘Quid Pro Quo? A comparative law perspective on the mutual recognition of judicial decisions in criminal matters’ (Intersentia 2011, supervisors: prof. dr. M.S. Groenhuijsen and prof. dr. J.B.H.M. Simmelink).


Her research activities encompass the various branches of EU criminal law, such as cross-border cooperation between Member States and the harmonisation of criminal law and criminal procedure. In the course of a research project she is currently conducting (with the financial support of an NWO VENI grant), she focuses on the exercise of EU criminalisation powers, i.e. the creation of EU-wide criminal prohibitions (e.g. in the areas of terrorism, human trafficking, EU-fraud). It is for instance examined which grounds have been underpinning EU-level criminalisation of conduct under the Lisbon Treaty and whether, and to what extent, these grounds justify the criminalisation of the conduct concerned. The aim of this research project is to develop guidelines for the legitimate exercise of EU criminalisation powers.


  • Internationaal en Europees strafrecht (master Rechtsgeleerdheid)
  • Criminal Justice, Human Rights and EU Criminal Law (Criminal Justice master)

Additional activities

Professor of European Criminal Law

  • Faculteit Rechtsgeleerdheid
  • Instituut voor Strafrecht & Criminologie
  • Straf- en Strafprocesrecht

Work address

Kamerlingh Onnes Building
Steenschuur 25
2311 ES Leiden
Room number B 3.23



  • European Journal of Crime, Criminal Law and Criminal Justice Lid van de redactie
  • Commissie Meijers Vicevoorzitter

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