The Washington Consensus is a set of ten economic policy prescriptions considered to constitute the "standard" reform package promoted for crisis-wracked developing countries by Washington, D.C.-based institutions such as the International Monetary Fund (IMF), World Bank and United States Department of the Treasury. The term was first used in 1989 by English economist John Williamson. The prescriptions encompassed free-market promoting policies in such areas as macroeconomic stabilization, economic opening with respect to both trade and investment, and the expansion of market forces within the domestic economy.

Subsequent to Williamson's use of the terminology, and despite his emphatic opposition, the phrase Washington Consensus has come to be used fairly widely in a second, broader sense, to refer to a more general orientation towards a strongly market-based approach (sometimes described as market fundamentalism or neoliberalism). In emphasizing the magnitude of the difference between the two alternative definitions, Williamson has argued that his ten original, narrowly defined prescriptions have largely acquired the status of "motherhood and apple pie" (i.e., are broadly taken for granted), whereas the subsequent broader definition, representing a form of neoliberal manifesto, "never enjoyed a consensus [in Washington] or anywhere much else" and can reasonably be said to be dead.

Discussion of the Washington Consensus has long been contentious. Partly this reflects a lack of agreement over what is meant by the term, but there are also substantive differences over the merits and consequences of the policy prescriptions involved. Some critics take issue with the original Consensus's emphasis on the opening of developing countries to the global marketplace and transitioning to an emerging market, and/or with what they see as an excessive focus on strengthening the influence of domestic market forces, arguably at the expense of governance which will affect key functions of the state. For other commentators, the issue is more what is missing, including such areas as institution-building and targeted efforts to improve opportunities for the weakest in society through equal opportunity, social justice and poverty reduction.