約瑟夫·斯蒂格利茨（Joseph Eugene Stiglitz），美國經濟學家，美國哥倫比亞大學校級教授（University Professor），哥倫比亞大學政策對話倡議組織（Initiative for Policy Dialogue）主席。他於1979年獲得約翰·貝茨·剋拉剋奬（John Bates Clark Medal），2001年獲得諾貝爾經濟學奬，他的重要貢獻使得IPCC獲得2007年諾貝爾和平奬。1993年至1997年，美國總統經濟顧問委員會成員及主席，1997年至1999年，任世界銀行資深副行長兼首席經濟學家。2011至2014年，任國際經濟學協會主席。

Joseph Eugene Stiglitz (/ˈstɪɡlɪts/; born February 9, 1943) is an American economist, public policy analyst, and a professor at Columbia University. He is a recipient of the Nobel Memorial Prize in Economic Sciences (2001) and the John Bates Clark Medal (1979). He is a former senior vice president and chief economist of the World Bank and is a former member and chairman of the (US president's) Council of Economic Advisers. He is known for his support of Georgist public finance theory and for his critical view of the management of globalization, of laissez-faire economists (whom he calls "free-market fundamentalists"), and of international institutions such as the International Monetary Fund and the World Bank.

In 2000, Stiglitz founded the Initiative for Policy Dialogue (IPD), a think tank on international development based at Columbia University. He has been a member of the Columbia faculty since 2001, and received that university's highest academic rank (university professor) in 2003. He was the founding chair of the university's Committee on Global Thought. He also chairs the University of Manchester's Brooks World Poverty Institute. He is a member of the Pontifical Academy of Social Sciences. In 2009, the President of the United Nations General Assembly Miguel d'Escoto Brockmann, appointed Stiglitz as the chairman of the U.N. Commission on Reforms of the International Monetary and Financial System, where he oversaw suggested proposals and commissioned a report on reforming the international monetary and financial system. He served as chair of the international Commission on the Measurement of Economic Performance and Social Progress, appointed by President Sarkozy of France, which issued its report in 2010, Mismeasuring our Lives: Why GDP doesn't add up, and currently serves as co-chair of its successor, the High Level Expert Group on the Measurement of Economic Performance and Social Progress. From 2011 to 2014, Stiglitz was president of the International Economic Association (IEA). He presided over the organization of the IEA triennial world congress held near the Dead Sea in Jordan in June 2014.

Stiglitz has received more than 40 honorary degrees, including from Cambridge and Harvard, and he has been decorated by several governments including Bolivia, Korea, Colombia, Ecuador, and most recently France, where he was appointed a member of the Legion of Honor, order Officer.

In 2011 Stiglitz was named by Time magazine as one of the 100 most influential people in the world. Stiglitz's work focuses on income distribution from a Georgist perspective, asset risk management, corporate governance, and international trade. He is the author of several books, the latest being People, Power, and Profits (2019), The Euro: How a Common Currency Threatens the Future of Europe (2016), The Great Divide: Unequal Societies and What We Can Do About Them (2015), Rewriting the Rules of the American Economy: An Agenda for Growth and Shared Prosperity (2015), and Creating a Learning Society: A New Approach to Growth Development and Social Progress (2014). He is also one of the 25 leading figures on the Information and Democracy Commission launched by Reporters Without Borders.