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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.

Showcase at 2022 ESIL conference

As part of OUP’s showcase for the 17th Annual Conference of the European Society of International Law, a collection of articles from the Max Planck Encyclopedia of Public International Law (MPEPIL) and the Max Planck Encyclopedia of International Procedural Law (MPEiPro) has been made freely available for you to explore. These have been informed by this year’s theme the ‘In/Ex-clusiveness of International Law’. Find out more here.


Site News

September 26, 2022

Case reports from w/c 12 September 2022

This month ORIL published 10 new articles. 

September 15, 2022

New OHT Editorial

The Treaties of Villafranca and Zurich (1859): Old Regime Nostalgia on the Road to Italian Unification by Randall Lesaffer

September 2, 2022

Case reports from w/c 29 August 2022

This month ORIL published 13 new articles. 

September 1, 2022

MPEPIL August/September 2022 Update

6 updated articles are now available on the Max Planck Encyclopedia of Public International Law.