Jessica Tuchman Mathews is an American international affairs expert with a focus on climate and energy, defense and security, nuclear weapons, and conflict and governance. She was president of the Carnegie Endowment for International Peace, an international affairs think tank headquartered in Washington, D.C., with offices in five other countries, from 1997 to 2015. She has also held jobs in the Executive and Legislative branches of government, management and research in nonprofits, and journalism.

The Carnegie Endowment for International Peace (CEIP) is a nonpartisan international affairs think tank headquartered in Washington, D.C., with operations in Europe, South and East Asia, and the Middle East as well as the United States. Founded in 1910 by Andrew Carnegie, the organization describes itself as being dedicated to advancing cooperation between countries, reducing global conflict, and promoting active international engagement between the United States and countries around the world. It engages leaders from multiple sectors and across the political spectrum.