The International Institute for the Unification of Private Law (UNIDROIT) is an independent intergovernmental organisation dedicated to the harmonisation, coordination, and modernisation of private and commercial law across national jurisdictions. It was founded in 1926 in Rome, Italy, under the aegis of the League of Nations.
As a global organisation, UNIDROIT has 65 Member States drawn from the five continents and representing a variety of legal, economic and political systems as well as cultural backgrounds. Together, its membership represents over 91% of the global nominal GDP and over 72% of the world population.
UNIDROIT develops normative instruments, drawing on a global network of experts including scholars, judges, practitioners, and government representatives. Its work encompasses international conventions, model laws, principles, legal guides, and other instruments that are widely used by States, courts, arbitrators, legal practitioners, and international organisations. Its instruments span areas such as access to credit, contracts, agriculture and private law, cultural property, capital markets and financial law, law and technology, civil procedure, and sustainable development. UNIDROIT's work facilitates trade, contributes to international sustainable development and growth, advances international cooperation and exchange, and supports education.
UNIDROIT's governance comprises a General Assembly, Finance Committee, President, Governing Council, permanent Committee, Administrative Tribunal, and the Secretariat. The organisation is headquartered in Rome, at the historic Villa Aldobrandini, which houses the Institute's offices and meeting facilities, provided by the Italian Government as part of the Headquarters Agreements of the organisation.
UNIDROIT was established in 1926 with the aim of promoting the harmonisation and modernisation of private law across national jurisdictions. Its creation formed part of the broader post-First World War efforts to strengthen international cooperation and develop common legal frameworks in response to the expansion of cross-border trade.
The Institute was founded as one of the few specialised agencies (bureaux) of the League of Nations, alongside the International Labour Organisation (1919) and the Permanent Court of International Justice (1922), which operated within the League's institutional framework. The initiative for UNIDROIT's creation was taken by Vittorio Scialoja, Senator of the -then- Kingdom of Italy and Professor of Roman Law at the University of Rome. The Council of the League of Nations appointed UNIDROIT's Governing Council, while the Italian Government provided the historic Villa Aldobrandini in Rome as its seat. The Institute officially began work on 30 May 1928, with an inauguration attended by King Victor Emmanuel III and Prime Minister Benito Mussolini.
Among the early members of the Governing Council was Ernst Rabel (1928-1933), widely regarded as a founding figure of modern comparative law, who contributed significantly to early unification initiatives. Other prominent members during the early period included Alfredo Rocco (1928-1935), Henri Capitant (1929-1937), Ambroise-Victor Colin, ÃÂsten Undén, and Jules Basdevant (1939-1964). In later decades, Council members included distinguished jurists such as Nagendra Singh, René David (1962-1978), Philip Jessup, E. Allan Farnsworth (1978-1998), Sir Roy Goode or Arthur Hartkamp.
Following Italy's withdrawal from the League of Nations in 1937, UNIDROIT was reconstituted in 1940 as an autonomous intergovernmental organisation under a new statute. Regardless of the upheavals during the Second World War, UNIDROIT never interrupted its work, and has been working continuously since its foundation. After the establishment of the United Nations in 1945, it remained independent while maintaining cooperative relations with the United Nations and other international organisations.
In accordance with the global nature of UNIDROIT and its work, membership is open to all countries. It requires accession to the UNIDROIT Statute in accordance with article 20 of the Statute. Accordingly, any Government wishing to accede to the Statute must notify the Italian Government in writing of its accession.
As at 16 February 2026, UNIDROIT had 65 Member States:
In 2023, Singapore and Mongolia became the newest Member States.
UNIDROIT's governance structure comprises a General Assembly, a Finance Committee, a President, a Governing Council, a Permanent Committee, an Administrative Tribunal, and a Secretariat. To carry out its substantive activities, UNIDROIT relies on a network of correspondents as well as on extensive collaboration with external experts (including academics, government experts, practitioners, and private sector representatives) as well as intergovernmental and non-governmental organisations. Notably, its legal instruments are developed within dedicated Working or Study Groups set up for each specific project. These groups are typically comprised of globally recognised experts from both the private and public sectors, academics, and representatives from partner organisations and governments, ensuring representation of all major legal traditions and geopolitical regions.
The General Assembly is UNIDROIT's principal decision-making body and comprises its Member States. It convenes at least once a year in ordinary session to approve the annual accounts and expenditures, as well as the budget of the Institute. Every three years, it approves UNIDROIT's Work Programme based on a proposal from the Governing Council.
Every five years the Assembly further elects the members of the Governing Council. It appoints the members of the Finance Committee and the auditor responsible for financial oversight, as well as the members of the Administrative Tribunal. In addition, it determines the categories of financial contributions of Member States. The General Assembly Sessions are convened by the President of UNIDROIT and presided over by a Chair, who rotates each year among the Member States. Decisions are generally taken by consensus. The rules of procedure are set out in the UNIDROIT Regulations.
Pursuant to Article 9 of the UNIDROIT Regulations, the Finance Committee, composed of representatives of Member States appointed for three-year terms, oversees the financial management of UNIDROIT. It reviews the proposed draft budget, provides preliminary recommendations, and monitors the execution of approved budgets. The Committee generally meets twice yearly to consider budgetary matters, including adjustments, arrears in contributions, and financial reports.
UNIDROIT's annual accounts are audited by an independent auditor appointed for a five-year term by the General Assembly. The audited accounts are presented to the General Assembly for approval, ensuring transparency and accountability in the Institute's financial management.
UNIDROIT is primarily financed through annual contributions of its Member States. The categories of the contributions are determined by the General Assembly based on recommendations from the Finance Committee. Its budget covers the operational costs of the Secretariat, the organisation of meetings and conferences, research projects, and the development and dissemination of international conventions, model laws, and other legal instruments. In addition to statutory contributions, UNIDROIT may receive extrabudgetary funding from grants, donations, or specific project support provided by Member States or international organisations.
Pursuant to the UNIDROIT Statute, the President is appointed by the Italian Government for a term of five years. The President is competent to represent the Institute and perform all such action as is called for by the Institute's corporate existence. The President convenes sessions of the Permanent Committee, the Governing Council and the General Assembly in accordance with the provisions set forth in the Statute.
The Governing Council comprises the President of UNIDROIT and twenty-five members,