William (Bill) Mansfield III
Senior Advisor
Email: bill.mansfield at unep.org
William (Bill) Mansfield is a Senior Advisor to the Executive Director of UNEP serving in the Regional Office for North America (UNEP RONA) based in Washington, DC. He was an Assistant Secretary General and the Deputy Executive Director of UNEP from 1986 to 1993, Director of UNEP's Global Environment Facility Office in 1995, Vice President for Operations at the Worldwatch Institute in 1996-1997 and Special Advisor to the North American Commission for Environmental Cooperation in 2000-2.
Earlier, Mr. Mansfield served as a U.S. State Department Foreign Service Officer in a variety of environmental assignments at the U.S. State Department and Environmental Protection Agency.