Universiteit Leiden

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Letizia Lo Giacco

Assistant professor

Dr. L. Lo Giacco
+31 71 527 7593

Letizia Lo Giacco is an Assistant Professor in International Law at the Grotius Centre for International Legal Studies of Leiden University, as of May 2019. Her research focuses on questions of international legal theory, as well as on the role and practices of courts and tribunals in international law. In particular, her doctoral dissertation, titled Citing Matters – An Analysis of the Use of Judicial Decisions in International Criminal Law Adjudication through the Lens of Law-Making, inquired the practices of citing judicial decisions in the argumentation of international and domestic jurisdictions, using a Scandinavian legal realist perspective.
Letizia holds an LLD (Doctor of Laws degree) in International Law from Lund University (2019) and an LLM in International Humanitarian Law from the Geneva Academy of International Humanitarian Law and Human Rights (2010). Between 2010 and 2013, she gained professional experience in international institutions including the UN Assistance to the Khmer Rouge Trials (UNAKRT), the Special Tribunal for Lebanon, and the European Commission (Kimberly Process).

More information about Letizia Lo Giacco

Prior to joining Leiden University, Letizia taught public international law, international criminal law and international humanitarian law within the LLM in International Human Rights Law at Lund University Faculty of Law (Sweden). She held positions as visiting fellow at the Max Planck Institute for Comparative Public Law and International Law in Heidelberg (2016), at the Amsterdam Centre of International Law (2017), and at the Manchester International Law Centre (2018). To the latter, she remains affiliated as a guest lecturer in international law.

Letizia has published on questions of international law-making, on the practice of international and domestic courts in the adjudication of international law, on the role of judicial decisions in the argumentation of international law, as well as on the use of force and non-state actors. She is a contributor to the TRICI Law project on the Theory and Philosophy of Customary International Law and its Interpretation, and a regular participant in the Max Planck Trialogues on the Law of Peace and War, since 2016.

Letizia has been cooperating as a peer-reviewer with the Nordic Journal of International Law (Brill), the International Review of the Red Cross (Cambridge University Press), and Leiden Journal of International Law (Cambridge University Press).

Assistant professor

  • Faculteit Rechtsgeleerdheid
  • Instituut voor Publiekrecht
  • Grotius Centre for Intern Legal Studies

Work address

Kamerlingh Onnes Building
Steenschuur 25
2311 ES Leiden
Room number C1.17



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