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.
http://www.icem.org/

International Confederation of Free Trade Unions
Federation of unions with social democratic leanings founded in 1949.
http://www.icftu.org/

International Federation of Building and Wood Workers, IFBWW (FITBB/FITCM/IBBH/IBTU)
Site for trade unions in the building, wood, forest and allied industries
http://www.ifbww.org

International Federation of Journalists
World body advocating the rights of journalists.
http://www.ifj.org/

International Transport Workers' Federation (ITF)
Global federation of maritime unions.
http://www.itf.org.uk/

PSI - IÖD - ISKA - ISP
Public Services International is a trade union federation of over 500 unions public sector unions in over 140 countries.
http://www.world-psi.org/

TUAC - Trade Union Advisory Committee
Advises the Organisation for Economic Co-operation and Development (OECD) on union issues.
http://www.tuac.org/

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.
http://www.iuf.org/

International Labor Organization
the UN specialized agency which seeks the promotion of social justice and internationally recognized human and labour rights
http://www.ilo.org/

Union Network International
A global union for skills and services workers.
http://www.union-network.org/

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.
http://www.imfmetal.org

International Trade Union Confederation (ITUC)
International trade union confederation uniting autonomous and democratic trade unions with Christian leanings from 113 countries all over the world.
http://www.ituc-csi.org/