Guillaume Grosso


CGIAR Deputy Executive Managing Director

Guillaume Grosso is the Deputy Executive Managing Director of CGIAR.

Previously, Mr. Grosso has served in leadership roles across multilateral institutions, non-profit organizations and the private sector, most recently as Director, Private Sector and Sovereign Engagement, Donor Relations and Campaigns at Gavi, the Vaccine Alliance. He has also served as Co-Chair of several international summits on global health. Mr. Grosso also founded and directed ONE France and held senior roles at the OECD Development Centre and the African Development Bank.

Mr. Grosso has launched or helped grow several organizations and public-private partnerships, shaping strategies, engaging in successful policy dialogue, securing multi-billion-dollar funding, and driving critical institutional reform. His leadership of high-level engagement in the G7 and G20 forums has helped to position key development and health issues.

A Board member of France Medias Monde and The World Association of Children’s Friends, a nonprofit chaired by Princess Caroline of Monaco, he has also contributed to Gordon Brown’s Education Commission as Non-Executive Director until it concluded its work in June 2023. He is a Fellow of the British Royal Society of Arts and was recognized by INSEAD’s 2021 Force for Good Award for his leadership and achievements in the service of the common good.

A graduate of Ecole des Mines de Paris and Collège des Ingénieurs, Mr. Grosso also holds an MBA with Distinction from INSEAD.