Skip To Content

Guillermo Castilleja

Senior Advisor, Global Alliance for the Future of Food Special Advisor, CCICED

Guillermo Castilleja is a Senior Advisor at the Global Alliance for the Future of Food. Guillermo’s time has been generously allocated by his foundation, the Gordon and Betty Moore Foundation, to help the Global Alliance further its work on true cost accounting. Before being seconded to the Global Alliance, Guillermo, in his position as senior fellow at the Moore Foundation, advised the president on both internal analytics and external relations – providing foresight and judgement to aid in identifying future directions, as well as opportunities to elevate the foundation’s and grantees’ achievements. Guillermo served six years at the helm of the foundation’s Environmental Conservation Program, leading its efforts to protect critical ecosystems and balance long-term conservation with sustainable use. 

Before joining the foundation in 2010, Guillermo worked for World Wildlife Fund-International (WWF), most recently as Executive Director for conservation. In that capacity, he directed and coordinated its global conservation efforts, leading the development of global priorities for the network, overseeing implementation of its activities and monitoring progress. He has also worked for the World Bank and the National Wildlife Federation. 

Guillermo graduated from the National University of Mexico and received a Master’s degree in Forestry, a Master’s degree in Philosophy and a doctorate in Forest Ecology from Yale University.