The Conscience of a Liberal is a 2007 book written by economist and Nobel laureate Paul Krugman. It was 24th on the New York Times Best Seller list in November 2007. The title was used originally in Senator Paul Wellstone's book of the same name in 2001. Wellstone's title was a response to Barry Goldwater's 1960 book The Conscience of a Conservative. In the book, Krugman studies the past 80 years of American history in the context of economic inequality. A central theme is the reemergence of both economic and political inequality since the 1970s. Krugman analyzes the causes behind these events and proposes a "new New Deal" for America.

Paul Robin Krugman is an American economist who is the Distinguished Professor of Economics at the Graduate Center of the City University of New York and a columnist for The New York Times. In 2008, Krugman was the sole winner of the Nobel Memorial Prize in Economic Sciences for his contributions to new trade theory and new economic geography. The Prize Committee cited Krugman's work explaining the patterns of international trade and the geographic distribution of economic activity, by examining the effects of economies of scale and of consumer preferences for diverse goods and services.