Mark Alan Weisbrot is an American economist and columnist. He is co-director with Dean Baker of the Center for Economic and Policy Research (CEPR) in Washington, D.C. Weisbrot is President of Just Foreign Policy, a non-governmental organization dedicated to reforming United States foreign policy.

Weisbrot was born in Chicago, Illinois. He graduated from the University of Illinois at Urbana–Champaign with a bachelor's degree in economics. Weisbrot received his Ph.D. in economics from the University of Michigan.

In 1999, Weisbrot co-founded, together with economist Dean Baker, the Center for Economic and Policy Research (CEPR), a think tank which produces economic research on topics that affect people's lives to contribute to the public debate in the U.S. (inequality, macroeconomic policy and stability, labor markets, health and social programs, intellectual property, social security), and internationally: globalization and trade, the International Monetary Fund and institutions of global governance, Latin American and European economies, and US foreign policy.

Weisbrot provided testimony to Congressional hearings in 2002 to a United States House of Representatives committee on the Argentine economic crisis (1999–2002) and in 2004 to the United States Senate Committee on Foreign Relations on the state of democracy in Venezuela with what he said were U.S. efforts to undermine the government, and the media inside the country.

As an economist, Weisbrot has opposed privatization of the United States Social Security system and has been critical of neoliberal globalization and the International Monetary Fund (IMF). His work on Greece's ongoing debt crisis has influenced the debate over what measures the Greek government should take in negotiating a solution with the European Central Bank, European Commission, and the International Monetary Fund.

Weisbrot says that globalization as promoted by the United States government and multilateral lending institutions such as the IMF and the World Bank has failed poorer countries, stating that "no nation has ever pulled itself out of poverty under the conditions that Washington imposes on underdeveloped countries." Economist Jeffrey Sachs has stated that Weisbrot was "the leader in fighting" the Washington Consensus behind much of this globalization.

Weisbrot has been described as the "intellectual architect" behind the unsuccessful Bank of the South, a joint project by Argentina, Brazil, Paraguay, Uruguay, Ecuador, Bolivia and Venezuela which was spearheaded by Venezuelan president Hugo Chávez. He criticized the role played by the IMF while taking an active role in promoting the bank, describing the Bank of the South as "another Declaration of Independence for South America" and that it was "Latin America casting off Washington's shackles".

Weisbrot co-authors with CEPR a series of papers looking at the progress in economic growth and social indicators. In 2017, he presented the most recent report, which emphasized the role of China, with Sachs in Washington, D.C.