UNEP’s headquarters is in Nairobi, Kenya. Being based in Africa gives UNEP a first-hand understanding of the environmental issues facing developing countries.
UNEP’s global and cross-sectoral outlook is reflected in its organizational structure, its activities and its personnel.

UNEP has a major office in Paris (France) where its Division of Technology, Industry and Economics (DTIE) is located.
UNEP is represented across the globe by six Regional Offices:

Additionally, UNEP has an office in New York (USA) to maintain a close relationship with the UN General Assembly and Secretariat. Offices in Addis Ababa (Ethiopia), Brussels (Belgium) and Cairo (Egypt) respectively provide liaison with the African Union, the European Union and the Arab League. UNEP also has country-level liaison offices in Brasilia (Brazil), Beijing (China) and Moscow (Russia).

UNEP supports a growing network of centres of excellence such as the UNEP Collaborating Centre on Energy and Environment (UCCEE), the Global Resource Information Database (GRID) centres and the UNEP World Conservation Monitoring Centre (UNEP-WCMC).