Canada’s Ambassador for Climate Change

Catherine Stewart

With over 25 years in the federal government, Catherine Stewart’s most recent role was Assistant Deputy Minister of International Affairs at Environment and Climate Change Canada.

Since 2014, she has served in senior executive roles at ECCC including as Canada’s Chief Negotiator for Climate Change, Director General Multilateral Affairs and Climate Change, and Director General for the Americas.

Prior to joining ECCC, Catherine was Director, Strategic Policy and Integration for the National Fighter Jet Procurement Secretariat and served as an executive at the Privy Council Office.

She also worked on defence and security policy at the Department of National Defence over the span of a decade, covering areas such as Cabinet affairs, Ministerial speechwriting and Canada’s participation in the NATO Alliance.

Prior to joining the federal government, Catherine worked on a United Nations peacekeeping and electoral mission in Mozambique.

She holds a Bachelor of Arts from McGill University and a Master of Arts in Public Administration from Carleton University. Catherine is married and has three sons.


The mandate for Canada’s Ambassador for Climate Change is multifaceted:

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