- Education International - ITS representing 280 teachers' unions and professional organisations worldwide.
- International Confederation of Chemical, Energy, Mine and General Workers' Unions (ICEM) - Founded in 1995, ICEM is a world federation of unions organizing 20 million workers in 115 countries in the chemical, energy, mine and allied industries.
- International Confederation of Free Trade Unions - Federation of unions with social democratic leanings founded in 1949.
- International Federation of Building and Wood Workers, IFBWW (FITBB/FITCM/IBBH/IBTU) - Site for trade unions in the building, wood, forest and allied industries
- International Federation of Journalists - World body advocating the rights of journalists.
- International Labor Organization - the UN specialized agency which seeks the promotion of social justice and internationally recognized human and labour rights
- International Metalworkers' Federation (IMF) - Multilingual site for international federation representing metal workers in over 95 countries. Includes links to publications, affiliated unions, and general information.
- International Trade Union Confederation (ITUC) - The ITUC is the International Trade Union Confederation, uniting autonomous and democratic trade unions. It represents 168 million workers in 155 countries and territories and has 311 national affiliates
- International Transport Workers' Federation (ITF) - Global federation of maritime unions.
- IUF-UITA-IUL - International Union of Food workers, a world-wide federation of trade unions representing workers in agriculture and plantations, food and beverages, hotels, restaurants and catering services.
- PSI - IÖD - ISKA - ISP - Public Services International is a trade union federation of over 500 unions public sector unions in over 140 countries.
- TUAC - Trade Union Advisory Committee - Advises the Organisation for Economic Co-operation and Development (OECD) on union issues.
- Union Network International - A global union for skills and services workers.
