Universiteit Leiden

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Jan de Keijser

Professor of Criminology

Prof.dr. J.W. de Keijser
+31 71 527 7228

Since November 2014 Jan is working as a Professor of Criminology at the Institute of Criminal Law and Criminology. He is chair of the department of Criminology.


Jan de Keijser (1968) studied political science at Leiden University. In 2000 he got his Ph.D. (cum laude) at the same university. His Ph.D. research focused on consistency in sentencing in relation to the goals and functions of punishment. From 2000 until 2010 he was senior researcher at the netherlands Institute for the Study of Crime and Law Enforcement (NSCR). 


His research interests are connected to the legitimacy of the criminal justice system. Apart from the decisions on proof and punishment in criminal cases, his research interests include public opinion towards punishment, confidence in the criminal justice system, and the communication between forensic experts and the courts. He published books and articles on these topics in both national and international journals. 


Professor of Criminology

  • Faculteit Rechtsgeleerdheid
  • Instituut voor Strafrecht & Criminologie
  • Criminologie

Work address

Kamerlingh Onnes Building
Steenschuur 25
2311 ES Leiden
Room number B 3.17



  • Nederlands Register Gerechtelijk Deskundigen (NRGD) Lid van het College van het NRGD
  • Nederlands Forensisch Instituut Trainer
  • Stichting Studiecentrum Rechtspleging Docent
  • European Journal of Criminology Editorial board
  • Prof. A.E.J. Modderman Stichting Bestuurslid
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