THE 50 MOST INFLUENTIAL THINK TANKS IN THE UNITED STATES

  1. Belfer Center for Science and International Affairs, Cambridge, MA
  2. Earth Institute, New York, NY
  3. Heritage Foundation, Washington DC
  4. Human Rights Watch, New York, NY
  5. Kaiser Family Foundation, Menlo Park, CA
  6. Council on Foreign Relations, New York, NY
  7. Brookings Institution, Washington DC
  8. Cato Institute, Washington DC
  9. Ludwig von Mises Institute, Auburn, AL
  10. American Enterprise Institute, Washington DC
  11. RAND Corporation, Santa Monica, CA
  12. Center for American Progress, Washington DC
  13. Guttmacher Institute, New York, NY
  14. Center on Budget and Policy Priorities, Washington DC
  15. National Bureau of Economic Research, Cambridge, MA
  16. Electronic Privacy Information Center, Washington DC
  17. Peterson Institute for International Economics, Washington DC
  18. Center for Strategic and International Studies, Washington DC
  19. Urban Institute, Washington DC
  20. Economic Policy Institute, Washington DC
  21. Aspen Institute, Washington DC
  22. Woodrow Wilson International Center for Scholars, Washington DC
  23. Hoover Institution, Stanford, CA
  24. Manhattan Institute for Policy Research, New York, NY
  25. Center for Immigration Studies, Washington DC
  26. Carnegie Endowment for International Peace, Washington DC
  27. Open Society Foundation, New York, NY
  28. Freedom House, Washington DC
  29. New America Foundation, Washington DC
  30. Independent Institute, Oakland, CA
  31. Heartland Institute, Chicago, Illinois
  32. Commonwealth Fund, New York, NY
  33. Discovery Institute, Seattle, WA
  34. Bipartisan Policy Center, Washington DC
  35. Acton Institute, Grand Rapids, MI
  36. Atlantic Council, Washington DC
  37. Public Policy Institute of California, San Francisco, CA
  38. Worldwatch Institute, Washington DC
  39. Mercatus Center at George Mason University, Arlington, VA
  40. Center for a New American Security, Washington DC
  41. Competitive Enterprise Institute, Washington DC
  42. The Russell Sage Foundation, New York, NY
  43. Reason Foundation, Los Angeles, CA
  44. Inter-American Dialogue, Washington DC
  45. Stimson Center, Washington DC
  46. James A. Baker III Institute for Public Policy, Houston, TX
  47. Carnegie Council foe Ethics in International Affairs, New York, NY
  48. Third Way, Washington DC
  49. Claremont Institute, Claremont, CA
  50. Lexington Institute, Arlington, VA

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