• United Nations Group of Experts on Geographical Names (UNGEGN)
• UNECE (United Nations Economic Commission for Europe) website: http://www.unece.org and http://www.unece.org/cefact/locode/service/location.htm
• Working Group on Romanization Systems
• Working Group on Toponymic Data Files and Gazetteers
• Working Group on Training Courses in Toponymy
• Dutch- and German-speaking Division
• UNGEGN East Central and South-East Europe Division
• Slovene Governmental Commission for the Standardisation of Geographical Names
• EuroGeoNames project website: http://www.eurogeonames.com/ (general information on the EuroGeoNames project)