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Welcome to Oxford Public International Law

Oxford Public International Law (OPIL) is a comprehensive, single location providing integrated access across our international law services, bringing you one step closer to the perfect research solution.

Our ground-breaking online resources work to speed up research and provide easy access to authoritative content, essential for anyone working in international law.

Celebrating MPEiPro 500th Article

Since its inception, Max Planck Encyclopedia of International Procedural Law has provided pioneering and meticulously peer-reviewed research on areas of international law that are often under-explored. Today, we proudly celebrate the publication of the Encyclopedia’s 500th article. To celebrate the success of this important milestone, we have collated key articles contained within MPEiPro and made them freely available for a limited time only.

You can access these, and read more about the milestone here.


Site News

May 3, 2023

Call for Rapporteurs: Oxford International Organizations

Oxford International Organizations (OXIO) is welcoming applications for Rapporteurs to join the project.

March 30, 2023

OXIO Headnotes - March 2023

3 new headnotes have been added to Oxford International Organizations.

March 28, 2023

EU Law March 2023 Update

Seven new articles have been added to the Oxford Encyclopedia of EU Law.

March 15, 2023

Climate Change Headnotes Published as Part of the ILDC

Read more about the significant climate change headnotes published as part of the ILDC.