InfoBooks

23 Free International Law Books [PDF]

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International law books cover the rules, norms and principles that guide relations between sovereign states. Here we gathered 23 free titles in PDF that walk you through this field from foundations to specialized areas.

The collection covers public international law, humanitarian law, human rights, environmental law, criminal law and private international law. Topics range from sources and state jurisdiction to customary international law, treaties, armed conflict, and conflict-of-laws across borders.

Every book is a free, legal PDF from UN agencies, ICRC, OHCHR and academic institutions. No signup or email needed: pick your section and start reading.

Books on Public International Law

These titles cover the foundations: sources of international law, state jurisdiction, customary international law, treaties, and the role of the United Nations. Start here if you want a broad map of the field.

  • International Law Handbook: Collection of Instruments. Book One

    Volume one of the United Nations Office of Legal Affairs handbook compiles foundational instruments: the UN Charter, the Statute of the International Court of Justice, and core declarations on sovereignty, decolonization and statehood. The reference for primary sources of public international law.

    United Nations

    Format: PDF 681 pages 5.92 MB
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  • International Law Handbook: Collection of Instruments. Book Two

    Volume two of the United Nations handbook gathers the core treaties on the law of armed conflict, international criminal law, and disarmament and non-proliferation. Includes Geneva Conventions, the Rome Statute, and key arms control conventions.

    United Nations

    Format: PDF 644 pages 19.04 MB
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  • International Law Handbook: Collection of Instruments. Book Three

    Volume three of the United Nations handbook compiles instruments on the law of the sea, international environmental law, and international watercourses. Reference for UNCLOS, MARPOL, biodiversity treaties and shared water resources.

    United Nations

    Format: PDF 576 pages 4.14 MB
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  • International Law Handbook: Collection of Instruments. Book Four

    Volume four of the United Nations handbook gathers instruments on international labour law, the law of cultural relations, and international trade and investment law. Includes ILO conventions, UNESCO instruments, and core trade and investment treaties.

    United Nations

    Format: PDF 620 pages 4.17 MB
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  • Benchbook on International Law

    A 353-page benchbook from the American Society of International Law that walks judges through how international law operates in U.S. courts. Covers sources, jurisdiction, treaties, customary law, immunities and the use of foreign and international authorities.

    Diane Marie Amann ed.

    Format: PDF 353 pages 7.26 MB
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  • ABC of International Law

    An accessible glossary-style introduction by the Swiss Federal Department of Foreign Affairs. Defines core international law concepts in plain language: sources, treaties, jurisdiction, state responsibility, sanctions and dispute settlement.

    Federal Department of Foreign Affairs (FDFA)

    Format: PDF 44 pages 0.44 MB
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  • Researching Public International Law

    A research guide from the American Society of International Law that maps how to find primary and secondary sources of public international law. Covers treaties, customary law, judicial decisions, soft law, and key institutional databases.

    Kelly Vinopal

    Format: PDF 34 pages 0.35 MB
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  • Sources of International Law - Scope and Application

    An Emirates Center lecture by Christoph Schreuer that maps the formal sources of international law: treaties, custom, general principles, judicial decisions and writings of publicists. Concise, authoritative, and grounded in ICJ practice.

    Christoph Schreuer

    Format: PDF 28 pages 0.11 MB
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  • The Role of International Law

    A book chapter by Marks, Rudolf, De Feyter and Schrijver on the role of international law in implementing the right to development. Examines treaty obligations, the work of UN human rights bodies, and the political tensions around a binding development convention.

    Stephen P. Marks, Beate Rudolf, Koen De Feyter

    Format: PDF 25 pages 0.22 MB
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  • Public International Law

    Lecture notes by M. S. Rama Rao that introduce public international law in plain language. Covers state sovereignty, sources of law, recognition, treaties, and the basics of jurisdiction and the law of war.

    M. S. Rama Rao

    Format: PDF 66 pages 0.54 MB
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  • Introduction to International Law

    A short overview by Robert Beckman and Dagmar Butte that summarizes the structure of the international legal system in 12 pages. Defines international legal personality, sources of law, jurisdiction and the basics of treaty interpretation.

    Robert Beckman and Dagmar Butte

    Format: PDF 13 pages 0.1 MB
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Books on International Humanitarian Law

International humanitarian law (IHL) regulates armed conflict and protects those who do not take part in hostilities. The texts below cover the Geneva Conventions, ICRC doctrine, and the law of armed conflict.

  • International Humanitarian Law

    Co-published by the Inter-Parliamentary Union and the ICRC, this 132-page handbook explains international humanitarian law through clear Q&A: what IHL is, when it applies, who it protects, and how parliamentarians can implement Geneva Convention obligations in national legislation.

    International Committee of the Red Cross

    Format: PDF 132 pages 4.31 MB
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  • International Humanitarian Law and the Law of Armed Conflict

    A Peace Operations Training Institute course by Antoine Bouvier on international humanitarian law and the law of armed conflict. Covers the Geneva Conventions, distinction, proportionality, and how IHL applies in practice during peace operations.

    Mr. Antoine A. Bouvier

    Format: PDF 42 pages 2.43 MB
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  • Protecting Education in Insecurity and Armed Conflict

    A specialized 360-page study by Hausler, Urban and McCorquodale on how international humanitarian and human rights law protect education during armed conflict. Covers students, teachers, school facilities and remedies, with treaty appendices and case analyses.

    Kristin Hausler, Nicole Urban, Robert McCorquodale

    Format: PDF 361 pages 9.41 MB
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Books on International Human Rights Law

These resources walk through the international human rights system, including its treaties, monitoring bodies and enforcement mechanisms. Use them to understand how rights are protected across jurisdictions.

  • Human Rights: Handbook for Parliamentarians

    A 237-page handbook co-published by the Inter-Parliamentary Union and the United Nations Office of the High Commissioner for Human Rights. Explains what human rights are, how international human rights law works, the role of state sovereignty, and how parliamentarians can implement human rights obligations in national legislation.

    Inter-Parliamentary Union and OHCHR

    Format: PDF 237 pages 2.41 MB
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  • Human Rights: A Basic Handbook for UN Staff

    An OHCHR handbook that introduces United Nations staff to international human rights law. Covers the scope of human rights, state responsibility, the difference between human rights law and humanitarian law, and the main international human rights instruments.

    Office of the High Commissioner for Human Rights

    Format: PDF 127 pages 0.76 MB
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  • International Human Rights Law

    A USCIS Officer Training module on international human rights law. Covers the sources of international law, how human rights instruments operate, and how rights apply in refugee, asylum and protection adjudications.

    US Citizenship and Immigration Services

    Format: PDF 47 pages 0.55 MB
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Books on International Environmental Law

These books map the treaties, principles and institutions that govern environmental cooperation between states. Topics span climate change, biodiversity, marine protection and pollution control.

  • International Environmental Law

    Course materials prepared by Professor Daniel Bodansky for the United Nations Office of Legal Affairs. Compiles the foundational treaties of international environmental law alongside Bodansky lectures on sources, principles, climate, biodiversity and watercourses.

    Dan Bodansky

    Format: PDF 142 pages 11.55 MB
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  • International Environmental Law

    Drawn from UNEP publications, this handbook explains the framework of multilateral environmental agreements and how states implement them. Covers compliance, enforcement, judicial handling of environmental cases, and negotiator practices.

    UN Environment Programme

    Format: PDF 96 pages 1.78 MB
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Books on International Criminal Law

International criminal law deals with individual criminal responsibility for the gravest crimes: genocide, crimes against humanity, war crimes and aggression. These books cover doctrine, the ICC, and landmark cases.

  • International Criminal Law

    Course materials prepared by Judge Kevin Riordan for the United Nations Office of Legal Affairs. Compiles the foundational instruments of international criminal law: the Genocide Convention, the Convention against Torture, the Rome Statute, and the rules of procedure and evidence of the ICC.

    Kevin Riordan

    Format: PDF 64 pages 2.62 MB
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  • International Criminal Law and Practice Training Materials

    Practitioner training materials developed for the OSCE-ODIHR, ICTY and UNICRI project on transferring war crimes case knowledge to national jurisdictions. Covers the scope of international criminal law, general principles, courts, genocide, crimes against humanity and war crimes.

    International Criminal Law Services

    Format: PDF 26 pages 1.12 MB
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  • International Criminal Law: An Introduction

    A working paper from the Iraq Legal Education Initiative at Stanford Law School. Walks readers through the foundations of international criminal law: individual criminal responsibility, core crimes, jurisdiction of international tribunals, and the Rome Statute regime.

    Stanford Law School

    Format: PDF 39 pages 0.42 MB
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Books on Private International Law

Private international law, also called conflict of laws, decides which jurisdiction applies when a legal dispute crosses borders. The books below cover contracts, family, property and judgments.

  • Private International Law

    An ASIL electronic resource guide by Don Ford on private international law. Maps the field across international sales, commercial arbitration, regional harmonization, and online research databases.

    Don Ford

    Format: PDF 17 pages 0.2 MB
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  • New Directions in Private International Law

    An article by David P. Stewart on the evolving definition of private international law and its expanding scope. Examines conflict-of-laws doctrine, jurisdictional rules, and the enforcement of foreign judgments across legal traditions.

    David P. Stewart

    Format: PDF 15 pages 0.1 MB
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This is the full lineup of free international law books in our library. Bookmark the page if you study or research the field, since we add new titles every month.

Looking for more? Browse our full collection of Law Books in PDF.

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