David Miller is the North American Director, C40 Climate Leadership Group, and Global Ambassador of inclusive climate action. He served as Chair of C40 Cities from 2008 until 2010.

Prior to joining the C40, Mr. Miller served as President and CEO of World Wildlife Fund-Canada, Canada’s foremost conservation organization. The WWF creates solutions to the most serious conservation challenges facing our planet, helping people and nature thrive.

Mr. Miller was Mayor of Toronto from 2003 to 2010. Under his leadership, Toronto became widely admired internationally for its environmental leadership, economic strength and social integration.  He is a leading advocate for the creation of sustainable urban economies, and a strong and forceful champion for the next generation of jobs through sustainability.

Mr. Miller has held a variety of public and private positions and served as Future of Cities Global Fellow at Polytechnic Institute of New York University from 2011 to 2014.

David Miller is a Harvard trained economist and professionally a lawyer. He and his wife, lawyer Jill Arthur, are the parents of two children.