United Nations Office of Legal Affairs

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United Nations Office of Legal Affairs
Formation13 February 1946; 78 years ago (1946-02-13)
TypeSecretariat office
Legal statusActive
HeadquartersNew York, United States
Miguel de Serpa Soares
Parent organization
United Nations Secretariat
icon Politics portal
Miguel de Serpa Soares, the current head of the Office of Legal Affairs of the United Nations
Miguel de Serpa Soares, Under-Secretary-General for Legal Affairs and United Nations Legal Counsel.

The United Nations Office of Legal Affairs (OLA) is a United Nations office currently administered by Under-Secretary-General for Legal Affairs and Legal Counsel of the United Nations Miguel de Serpa Soares.


Established in 1946, the United Nations Office of Legal Affairs provides a unified central legal service for the Secretariat and the principal and other organs of the United Nations and contributes to the progressive development and codification of international public and trade law. Pursuant to Article 102 of the UN Charter, OLA registers, publishes, and serves as a depository of international treaties. The office also functions to promote the strengthening and development as well as the effective implementation of the international legal order for the seas and oceans.[1]


The Office consists of six divisions:


The Office of Legal Affairs, through its Treaty Section, discharges the depositary functions of the Secretary-General under more than 560 multilateral treaties, including the custody of originals and the receipt of signatures and instruments of ratification, accession, etc. The Office is also responsible for the registration and publication of treaties and international agreements under Article 102 of the Charter of the United Nations.[2]

After their adoption, Treaties as well as their amendments have to follow the official legal procedures of the United Nations, as applied by the Office of Legal Affairs, including signature, ratification and entry into force.

See also[edit]


  • Hans Corell: United Nations Office of Legal Affairs, in: Karel Wellens (ed.): International Law: Theory and Practice. Essays in Honour of Eric Suy, The Hague/Boston/London: Martinus Nijhoff 1998, pp. 305–322.

External links[edit]