The International Union of Leather Technologists and Chemists Societies, a world-wide organization of professional societies, was originally organized in London in 1897. In 2017 there are currently 20 Member Societies and 4 Associate Members representing some 3,000 individual members.
The IULTCS was founded for the purpose of encouraging technology, chemistry and science of leather on a worldwide basis. According to the IULTCS statutes the aims of the Union are to foster cooperation between member societies, to hold congresses to enhance the advancement of leather science and technology, to form commissions for special studies and to establish international methods of samples and testing leather and materials associated with leather manufacture.
As of 2017 the IULTCS organization has held 34 Congresses in seventeen different countries on five continents.