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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.

International Cultural Heritage Law Collection

Explore our collection on international cultural heritage law. Learn about the protection of cultural property during armed conflict, intangible cultural heritage, and the challenges presented by globalization.

Featured content is free to access until 31 August.

International Migration and Refugee Law Collection

World Refugee Day is held on 20 June each year to raise awareness of and educate people on the challenges faced by migrants and refugees across the world.

In recognition of this day we have made a selection of chapters, encyclopedia entries, and journal articles on international migration and refugee law free to read throughout June and July. This collection covers both introductory texts on the subject and in-depth analysis of related legal frameworks, international organisations, and human rights issues.

The Promise of International Law Collection

Access 25 articles and chapters in our latest collection based on the theme "The Promise of International Law".

The collection reflects on the failures and successes of international law in the last few decades, and the current role international law plays in helping achieve global justice, sustainable development, and international peace and security. All content featured is free to access until 31 July 2020.


Site News

July 30, 2020

New Titles

3 new titles have been added to OSAIL.

July 27, 2020

New Editorial

'The Wars of Louis XIV in Treaties VII: The Grand Alliance of 1689 and the Nine Years' War' is now available on OHT.

July 21, 2020

New and Updated Articles

1 new and 11 updated articles are now available on MPEPIL.

July 9, 2020

New Articles

8 new articles are now available on MPEiPro.

Latest Content


Björn Ahl