Research Guides: Legal Research Guide: Treaties

UN/LoN Treaty Series (UNTS/LNTS)

United Nations Treaty Collection This link opens in a new window
The United Nations Treaty Collection contains information regarding the activities of the Treaty Section of the United Nations Office of Legal Affairs. It includes Multilateral Treaties Deposited with the Secretary-General; United Nations Treaty Series Online; and the League of Nations Treaty Series; along with publications and documents prepared by the Treaty Section aimed at providing guidance and information.
Depositary of Treaties
Information relating to the depositary functions of the Secretary-General in respect of over 560 multilateral treaties, including participation, communications and entry into force.

Registration and Publication of Treaties
Information relating to the registration and publication of treaties in accordance with Article 102 of the Charter of the United Nations, including data regarding each treaty registered with the Secretariat and the full text of the United Nations Treaty Series.

Resources
Publications and documents prepared by the Treaty Section aimed at providing guidance and information with regard to participation in multilateral treaties, the drafting of treaties, the depositary practice of the Secretary-General, and the registration and publication of treaties.
UNTC - League of Nations Treaty Series This link opens in a new window
The UN Treaty Collection provides a database on treaties and international agreements registered or filed and recorded with and published by the League of Nations.

HeinOnline (United Nations Law Collection )
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Contains exact reproductions of major United Nations legal publications, including the complete collection of the United Nations Treaty Series, the League of Nations Treaty Series, the Monthly Statement of Treaties & International Agreements; Finding Aids and additional features make it easy to pull up a UN Treaty by entering a UNTS Citation, search for a UN Treaty, and link to law review articles that cite a UN Treaty.

Official journals

Bilateral or multilateral treaties (or their language versions) could be found in countries' official journals. Explore the UNOG Library's government gazettes collection:

Official journals at the UN Geneva Library

Selected online treaty sources

Bilateral Investment Treaties (UNCTAD)
European Treaty Series (ETS)
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The text of all Council of Europe treaties, their explanatory reports, the status of signatures and ratifications, the declarations and reservations made by States, as well as the notifications issued by the Treaty Office since 2005, are available on this website.
European University Viadrina - Treaties
Geneva Conventions (1949)
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Texts of the conventions and its protocols, current situation regarding signatures, ratifications, accessions and successions as well as the full texts of reservations, declarations and objections made by the States
Hague Conference on Private International Law, Statute
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Status of signatures, accessions, ratifications
Hague Conventions (status charts)
Hague Peace Conventions (1899, Notifications)
Hague Peace Conventions (1907, Notifications)

HeinOnline Treaties and Agreements Library This link opens in a new window

HeinOnline (United Nations Law Collection )
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Contains exact reproductions of major United Nations legal publications, including the complete collection of the United Nations Treaty Series, the League of Nations Treaty Series, the Monthly Statement of Treaties & International Agreements; Finding Aids and additional features make it easy to pull up a UN Treaty by entering a UNTS Citation, search for a UN Treaty, and link to law review articles that cite a UN Treaty.
Human rights treaties (texts and status of signatures, accessions and ratifications)
ILO Conventions
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ILO Conventions and Recommendations, available in English, French, Spanish, Arabic, Chinese, German, Portuguese and Russian. Ratification information, comments of the Committee of Experts and the Committee on Freedom of Association, representations, complaints, interpretations, General Surveys, and numerous related documents are available in the three official languages: English, French and Spanish
International Investment Agreements Navigator (UNCTAD)
international investment agreements
International Treaties Collection (WorldLII)
Nouveaux supplémens au Recueil de traités et autres actes remarquables
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Nouveaux supplémens au Recueil de traités et autres actes remarquables, servant à la connaissance des relations étrangères des puissances et Etats dans leur rapport mutuel depuis 1761 jusqu'à présent / fondé par George Frédéric de Martens (via Internet Archive).
Nouveaux supplémens au recueil de traités... v. 3
OHADA -- treaties, documents
OAS trade agreements
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Free trade, Mercosur, NAFTA, etc.)
Recueil des principaux traités d'alliance, de paix, de trêve, de neutralité, de commerce, de limites, d'échange conclus par les puissances de l'Europe tant entre elles qu'avec les puissances et Etats dans d'autres parties du monde
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Recueil des principaux traités d'alliance, de paix, de trêve, de neutralité, de commerce, de limites, d'échange conclus par les puissances de l'Europe tant entre elles qu'avec les puissances et Etats dans d'autres parties du monde : depuis 1761 jusqu'à présent / tiré des copies publ. par autorité, des meilleures collections particulières de traités, et des auteurs les plus estimés et par de Martens, via Google books, 7 volumes;
direct link to v. 1 (click on the volume image), for other volumes see 'Related books'
Recueil de traités d'alliance, de paix, de trêve, de neutralité, de commerce, de limites, d'échange etc. et plusieurs autres actes
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Recueil de traités d'alliance, de paix, de trêve, de neutralité, de commerce, de limites, d'échange etc. et plusieurs autres actes servant à la connaissance de relations étrangères des puissances et Etats de l'Europe [...] : depuis 1761 jusqu'à présent / par Geo. Fréd. de Martens, 8 volumes
(direct link to the v. 1 (click on the volume image), for other volumes see 'Related books')
Recueil manuel et pratique de traités, conventions et autres actes diplomatiques, 1760-1857 (Martens)
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Recueil manuel et pratique de traités, conventions et autres actes diplomatiques : sur lesquels sont établis les relations et les rapports existant aujourd'hui entre les divers états souverains du globe, depuis l'année 1760 jusqu'à l'époque actuelle / par Ch. de Martens et Ferd. de Cussy, 7 volumes;
direct link to v. 1 (click on the volume image), for other volumes see 'Related books'
Supplément au Recueil des principaux traités d'alliance, de paix, de trêve, de neutralité, de commerce, de limites, d'échange etc. conclus par les puissances de l'Europe
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Supplément au Recueil des principaux traités d'alliance, de paix, de trêve, de neutralité, de commerce, de limites, d'échange etc. conclus par les puissances de l'Europe [...] : depuis 1761 jusqu'à présent. Précédé de Traités du XVIIIème siècle antérieurs à cette époque et qui ne se trouvent pas dans le Corps universel diplomatique de Mrs. Dumont et Rousset et autres recueils généraux de traités / par George Frédéric de Martens (via Google books), 20 volumes; direct link to v. 1 (click on the volume image), for other volumes see 'Related books'
Treaties in Russian (Iuridicheskaia Rossiia)
Versal'skii mirnyi dogovor 1919, etc.
WTO agreements & documents