Cassie Flynn is the Global Director of Climate Change at the United Nations Development Programme (UNDP) and oversees a climate portfolio spanning more than 150 countries, among the world’s largest.

At the United Nations, Cassie has been on the forefront of climate action for the last 15 years. She advises prime ministers, presidents, heads of state, global leaders, and high-level coalitions on the climate crisis and was a key player in the historic Paris Agreement negotiations.

At UNDP, she led the Climate Promise that supported over 85% of developing countries to create and deliver their pledges under the Paris Agreement. By 2021, every country in the portfolio had an energy pledge, over 90% increased mitigation ambition and over 94% enhanced adaptation and resilience. The Climate Promise has been credited as a key initiative that advanced multilateral cooperation on climate change.

Cassie is a sought-after speaker for major conferences and events, including TED and SxSW. She is also a trusted expert for international and national media outlets, such as the BBC, Wall Street Journal, and New York Times. She was named to the World Economic Forum’s Council on Just Transition and is the author of “Blending Climate Finance Through National Climate Funds.”

Cassie holds a Master’s Degree from Yale University and Bachelor Degrees from Bowdoin College.