Paul Robin Krugman is an American New Keynesian economist who currently serves as the Distinguished Professor of Economics at the Graduate Center of the City University of New York. Until December 2024, he was a prominent columnist for The New York Times.

In 2008, Krugman was honored with the Nobel Memorial Prize in Economic Sciences for his groundbreaking contributions to new trade theory and new economic geography. His work has elucidated the patterns of international trade and the geographic distribution of economic activity, focusing on economies of scale and consumer preferences for diverse goods and services.

Krugman's academic career includes tenures as a professor of economics at MIT and Princeton University. He retired from the latter in June 2015 and holds the title of professor emeritus. Additionally, he is the Centennial Professor at the London School of Economics. In academia, he is renowned for his research on international economics, economic geography, liquidity traps, and currency crises.

As an author, Krugman has penned or edited 27 books, spanning scholarly works, textbooks, and general audience books. He has published over 200 scholarly articles and written numerous columns on economic and political matters for The New York Times, Fortune, and Slate.

Krugman's influence extends beyond academia, having been named the favorite living economist under 60 in a 2011 survey of economics professors. He is the second most frequently cited author on college syllabi for economics courses, according to the Open Syllabus Project.

As a commentator, he covers a broad spectrum of economic issues, including income distribution, taxation, macroeconomics, and international economics. Krugman identifies as a modern liberal, which is reflected in his books, his blog on The New York Times, and his 2007 book The Conscience of a Liberal. His popular commentary has drawn both praise and criticism.

After retiring from The New York Times in December 2024, Krugman began publishing a daily newsletter on Substack.