| Mackinac Center for Public Policy: A nonpartisan research and educational organization devoted to improving the quality of life for all Michigan citizens by promoting sound solutions to state and local policy questions. |
| Manhattan Institute: A nonpartisan, independent research and educational organization, the Institute's goal is to develop and encourage public policies at all levels of government which will allow individuals the greatest scope for achieving their potential, both as participants in a productive economy and as members of a functioning society. |
| Manpower Demonstration Research Corporation: A nonprofit, nonpartisan social policy research organization dedicated to learning what works to improve the well-being of low-income people. |
| Marshall Institute: Information on science and public policy issues (e.g. global warming, defense technology). |
| Massachusetts Institute for a New Commonwealth: MassINC is public policy think tank promoting the growth and vitality of the middle class. They produce periodic research reports, conduct public events and publish a quarterly magazine of Massachusetts policy and politics called CommonWealth. |
| Mathematica Policy Research: Public policy research organization. |
| McGregor Consulting Group: Carries out research and education on a variety of issues: consumer, family and home economics education and peace, citizenship and human rights. |
| Mercatus Center: The Mercatus Center at George Mason University is an education, research and outreach organization. The aim of its work is to enable individuals to live free, prosperous, and peaceful lives. |
| Milken Institute: The Milken Institute is an independent economic think tank whose mission is to improve the lives and economic conditions of people in the U.S. and around the world. |
| Morrison Institute for Public Policy: An Arizona State University resource for objective policy analysis and expertise. The Institute researches public policy issues, informs policy makers and residents, and advises leaders on choices and actions. |
| The Milton S. Eisenhower Foundation: Focuses on multiple solution ventures for the inner city, the truly disadvantaged, children, youth and families, including capacity building and policy advocacy. Provides research data and list of community partners. |
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