Common Market for Eastern and Southern Africa
- COMESA Centre, Ben Bella Road, P.O. Box 30051, Lusaka 10101, Zambia
Commonwealth Secretariat
- Marlborough House, Pall Mall, London SW1Y 5HX, United Kingdom
Council of Europe
- Avenue de l"Europe, 67075 Strasbourg Cedex, France
Council of the Baltic Sea States
- Strömsborg, P.O. Box 2010, 103 11 Stockholm, Sweden
Economic Community of West African States
- 101 Yakubu Gowon Crescent, Asokoro, Abuja, Nigeria
European Central Bank
- Sonnemannstrasse 20, 60314 Frankfurt am Main, Germany