A

• A.L. Burruss Institute of Public Service at Kennesaw State University
• Adam Smith Institute
• Advocate Institute of Human Resources, The - 
• Alexis de Tocqueville Institution
• Allegheny Institute for Public Policy
• American Enterprise Institute (AEI) (2)
• American Hellenic Institute
• Annenberg Public Policy Center - University of Pennsylvania
• Askew Institute on Politics and Society
• Atlantic Institute for Market Studies -
• Australia Institute -

B

• Brookings Institution
• Brownstone Policy Institute  
• Buckeye Institute for Public Policy Solutions

C

• Center for Impact Research
• C.D. Howe Institute
• Calvert Institute for Public Policy
• Canada West Foundation
• Canadian Policy Research Networks - CPRN -
• Cascade Policy Institute
• Cato Institute .
• Center for an Urban Future 
• Center for International Policy
• Center for Political Research
• Center for Strategic and International Studies (CSIS) 
• Center for the New West
• Center for the Study of American Business -
• Center for the Study of the Presidency
• Center of the American Experiment
• Center on Budget and Policy Priorities
• Centre for Defence & International Security Studies 
• Centre for European Policy Studies (CEPS) -
• Centre for Policy Studies -
• Centre for Population, Poverty and Public Policy Studies@
• Committee For Good Common Sense -
• Commonwealth Institute -
• Competitive Enterprise Institute
• Congressional Institute, Inc.
• Consumer Project on Technology .

D

• Development Group for Alternative Policies, The -
• Docking Institute of Public Affairs

E

• Economic Policy Institute -
• Ethics and Public Policy Center
• Europa Centrum
• European Centre for Social Welfare Policy and Research
• European Policy Centre

F

• Federal Trust
• Florida State University - Survey Research Laboratory
• Fort Hays State University - Center for Survey Research
• Fraser Institute

G

• Global Public Policy Networks

H

• Heritage Foundation
• Hoover Institution - Stanford University
• Hudson Institute

I 

• Independence Institute
• Indiana University - Purdue University Indianapolis
• Institute for Advanced Strategic and Political Studies
• Institute for Contemporary Studies
• Institute for International Policy Studies (IIPS)@
• Institute for Media, Policy and Civil Society (IMPACS)
• Institute for Policy Innovation 
• Institute for Policy Studies (6)
• Institute for Public Accuracy 
• Institute for Public Policy and Social Research@
• Institute for Public Policy Research (IPPR)
• Institute for Socioeconomic Studies -
• Institute of Government and Public Administration at the University of Illinois@
• Institute of Policy Studies
• Institute of Public Affairs
• Institute on Religion and Public Policy
• Institution for Social and Policy Studies at Yale University
• Instituto de Estudios Económicos de la Fundacion Mediterranea - 
• Instituto de Estudos Avançados
• Israel Democracy Institute, The (IDI)

J

• James A. Baker III Institute for Public Policy
• James Madison Institute, The .
• Japanese National Institute for Research Advancement -
• John M. Ashbrook Center for Public Affairs - Ashland University
• John Stuart Mill Institute -
• Johns Hopkins University Institute for Policy Studies
• Joint Center for Political and Economic Studies@

K

• Kettering Foundation -
• Learning Logic Foundation Think Tank

M

• Manhattan Institute for Policy Research -
• Massachusetts Institute for a New Commonwealth -
• Matsushita Institute of Government and Management
• Michigan State University - Institute for Public Policy and Social Research@
• Morrison Institute for Public Policy at Arizona State University

N

• National Academy on an Aging Society
• National Center for Policy Analysis
• National Center for Public Policy Research
• Nationl Academy of Social Insurance
• New America Foundation
• New York University - Taub Urban Research Center

O

• Oklahoma Council of Public Affairs

P

• Pacific Research Institute for Public Policy
• Pennsylvania State University
• Phoenix Center
• Pioneer Institute for Public Policy Research -
• Political Economy Research Center -
• Progress and Freedom Foundation
• Progressive Policy Institute
• Public Policy Institute of California

Q

• The Qudon Foundation

R

• RAND Corporation, The (4)
• Reason Foundation 
• Regulatory Policy Institute

S

• Seoul Development Institute
• Smith Center for Private Enterprise Studies - Cal State Hayward -
• Soikos: Centro de Estudios en Economia de la Salud y Politica Social 
• Southern Center for Studies in Public Policy  
• Strom Thurmond Institute of Government and Public Affairs

T

• Tennessee Public Policy Institute .
• Texas A&M - Public Policy Research Institute
• Thailand Development Research Institute
• The Century Foundation 
• Tomas Rivera Policy Institute

U

• University of Georgia - Carl Vinson Institute of Government
• University of Illinois at Springfield - Institute for Public Relations
• University of Leeds - Centre for Industrial Policy and Performance -
• University of Pennsylvania - Annenberg Public Policy Center
• University of Strathclyde - Glasgow, UK
• University of Texas at Austin - Ray Marshall Center
• University of Wisconsin-Madison  Center on Wisconsin Strategy (COWS) 
• Urban Institute

V

• Vera Institute of Justice

W

• Washington Institute for Policy Studies 
• Washington State Institute for Public Policy
• Web Directory: World Directory of Think Tanks
• Woodrow Wilson International Center for Scholars
• Woodstock Institute
  

Think Tank: Selected Essays

Think Tank Directory : A Guide to Nonprofit Public Policy Research Organizations