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The Max Planck Encyclopedias of International Law

Welcome to the home of the most trusted reference work in international law, the Max Planck Encyclopedia of Public International Law, as well as the newly-launched Max Planck Encyclopedia of International Procedural Law. The two Encyclopedias can be searched and browsed together, or separately by using appropriate filters. Find out more about the Encyclopedias and their teams by following the links on this page.

United Nations 75th Anniversary Collection

This United Nations Day (24 October 2020) marks the 75th anniversary of the entry into force of the UN Charter. In recognition of this milestone we have created a collection of articles and chapters that provide commentary on the role of the UN in international law over the past 75 years, and its significance to the development of global human rights and international peace and security. All featured content is free to access until 30 November 2020.


Site News

November 13, 2020

New Articles

9 new articles are now available on MPEiPro.

November 3, 2020

New Headnotes

5 new headnotes have been added to OXIO.

October 26, 2020

New Articles

9 new articles are now available on MPEiPro.

October 19, 2020

Call for Members Oxford Reports on International Law

Call for Members of the Advisory Board of the Oxford Reports on International Law (ORIL): International Human Rights Law (European Court of Human Rights)

Latest Content

Lisbon Treaty

Christian Tomuschat