The International Law Association, "originally" The Association for the Development and Codification of the Law of Nations "was founded at an international conference in Brussels in 1873 and are aimed at the study, clarification and development of public international law and private, Comparative Law and International Relations.

Since its founding, the ILA has never had a limited number of partners, being open to anyone interested in the development of international relations, lawyers or not.

The ILA is now a federal character, with more than 50 Ramos. Some of these represent countries, others have a regional character, but not represent governments or national points of view, are autonomous and operate under approval of the Executive Council which is elected by Ramos.

The Brazilian Branch of the ILA, ILA- Brazil called, has more than 40 years of existence. In 2005, the ILA-BRAZIL established a Board and a Board whose members perform their duties without pay.

The latest Biennial Conference of the ILA were held in Seoul (1986), Warsaw (1988), Queensland (1990), Cairo (1992), Buenos Aires (1994), Helsinki (1996), Taiwan (1998), London (2000), New Delhi (2002), Berlin (2004), Toronto (2006) and Rio de Janeiro (2008), alternating between geographic regions. The number of participants varies between 400 and 800 professionals and students from all over the world.

Over the past years, the work and resolutions of the ILA Committees duly approved by its General Assembly meeting in the Biennial Conference, have been used by the UN and other international agencies, often resulting in documents adopted by the international community, such as UNESCO Convention on the Submerged Cultural Heritage of Humanity and the UN Declaration on Principles for Sustainable Development immanent. Likewise, the international doctrine makes constant references to the work of the ILA, as in the case of the Helsinki Rules on the use of international waters and the Seoul Declaration on the Right to Development.