Skeptical Scientific Organizations:

American Association of Petroleum Geologists, USA (31,000+ Members)
American Association of State Climatologists, USA
Russian Academy of Sciences, Russia


Skeptical Organizations:

Abundant Wildlife Society of North America, USA
Accuracy In Media, USA
AccuWeather, USA
Acton Institute, USA
Adam Smith Institute, UK
Advancement of Sound Science Center, USA
Advocates for Self Government, USA
Air Quality Standards Coalition, USA
Alabama Policy Institute, USA
Alexis de Tocqueville Institution, USA
Alternate Solutions Institute, Pakistan
America's Future Inc., USA
American Council on Science and Health, USA
American Enterprise Institute, USA
American Institute for Economic Research, USA
American Land Rights Association, USA
American Legislative Exchange Council, USA
American Policy Center, USA
American Spectator Foundation, USA
Americans for Limited Government, USA
Americans for Prosperity Foundation, USA
Americans for Tax Reform, USA
Annapolis Center for Science-Based Public Policy, USA
Annapolis Institute, USA
Argentinean Foundation for a Scientific Ecology (FAEC), Argentina
Arizona State University Office of Cimatology, USA
Ashbrook Center for Public Affairs at Ashland University, USA
Asociación de Consumidores Libres, Costa Rica
Association for Liberal Thinking, Turkey
Association of American Physicians and Surgeons, USA
Association of British Drivers, UK
Atlas Economic Research Foundation, USA
Australian APEC Study Centre, Australia
Australian Libertarian Society, Australia
Ayn Rand Institute, USA
Blue Ribbon Coalition, USA
Bluegrass Institute for Public Policy, USA
Bureaucrash Foundation, USA
Business & Media Institute, USA
Capital Research Center (CRC), USA
Carbon Sense Coalition, Australia
Cathay Institute of Public Affairs, China
Cato Institute, USA
CEDICE LIBERTAD, Venezuela
Centro de Innovación y Desarrollo Humano, Uruguay
CEPOS, Denmark
CEPPRO, Paraguay
Center for the Dissemination of Economic Information, Venezuela
Center for Global Food Issues, USA
Center for Science and Public Policy, USA
Center for the Defense of Free Enterprise, USA
Center for the Study of Carbon Dioxide and Global Change, USA
Center for the Study of Popular Culture, USA
Centre for Independent Studies, Australia
Centre for Policy Studies (CPS), UK
China's Research Center for Economic Transition, China
CIEN, Guatemala
CIIMA-ESEADE, Argentina
Citizens Against Government Waste, USA
Citizens for the Environment and CFE Action Fund, USA
Civil Society Coalition on Climate Change, International
Clare Boothe Luce Policy Institute, USA
Claremont Institute, USA
Clean Water Industry Coalition, USA
Club For Growth, USA
Committee for a Constructive Tomorrow, USA
Committee for Economic Development, USA
Competitive Enterprise Institute, USA
Concerned Women for America, USA
Cooler Heads Coalition, USA
Cornwall Allliance, USA
DCI Group, USA
Doctors for Disaster Preparedness (DDP), USA
Discovery Institute, USA
Eagle Forum, USA
Environmental Conservation Organization (ECO), USA
Environment Probe, Canada
European Center for Economic Growth, Austria
Family Research Council, USA
Federalist Society, USA
Federazione Ambiente Agricoltura, Italy
FORCES International, USA
Foundation for American Communications, USA
Foundation for Economic Education (FEE), USA
Foundation for Research on Economics and the Environment (FREE), USA
Fraser Institute, Canada
Free Congress Foundation, USA
Free Enterprise Education Institute, USA
Free Enterprise Institute, USA
Free Market Foundation, South Africa
FreedomWorks, USA
Friends of Science, Canada
Frontier Centre for Public Policy (FCPP), Canada
Frontiers of Freedom Institute, USA
Fundacion Atlas 1853, Argentina
Fundacion Libertad, Panama
Future of Freedom Foundation, USA
George C. Marshall Institute, USA
Global Climate Coalition, USA
Grassfire.org, USA
Greening Earth Society, USA
Greenspirit, USA
Heartland Institute, USA
Heritage Foundation, USA
High Park Group, Canada
Hispanic American Center for Economic Research, USA
Hoover Institution, USA
Hudson Institute, USA
IEEP, Ecuador
Imani: The Centre for Humane Education, Ghana
Independent Institute, USA
Information Council on the Environment, USA
Initiative of Public Policy Analysis, Nigeria
INLAP, Costa Rica
Institut Constant de Rebecque, Switzerland
Institute for Canadian Values, Canada
Institute for Energy Research, USA
Institute for Free Enterprise, Germany
Institute for Humane Studies, USA
Institute for Market Economics, Bulgaria
Institute for Policy Innovation, USA
Institute for Research on the Economics of Taxation (IRET), USA
Institute for Trade, Standards and Sustainable Development, USA
Institute of Economic Affairs, UK
Institute of Economic Analysis, Russia
Institute of Public Affairs, Australia
Institute on Religion and Public Life, USA
Instituto de Libre Empresa, Peru
Instituto Liberdade, Brazil
Instituto Veritas, Honduras
Interfaith Stewardship Alliance, USA
International Climate and Environmental Change Assessment Project, USA
International Climate Science Coalition, Canada
International Policy Network, UK
International Society for Individual Liberty, USA
Istituto Bruno Leoni, Italy
Jerusalem Institute for Market Studies, Israel
John Locke Foundation, USA
Lavoisier Group, Australia
League of Private Property Voters, USA
Liberales Institut, Switzerland
Liberalni Institute, Czech Republic
Libertad y Desarrollo, Chile
Libertarian Alliance, UK
Libertarian Futurist Society, USA
Libertarian International, The Netherlands
Liberty Institute, India
Lion Rock Institute, Hong Kong
Lithuanian Free Market Institute, Lithuania
Ludwig von Mises Institute, USA
Maine Heritage Policy Center, USA
Media Research Center, USA
Mercatus Center at George Mason University, USA
Milton & Rose D. Friedman Foundation, USA
Minimal Government Thinkers, Philippines
Montreal Economic Institute, Canada
National Center for Policy Analysis, USA
National Center for Public Policy Research, USA
National Chamber Foundation (NCF), USA
National Motorists Association, USA
National Taxpayers Union, USA
Natural Resources Stewardship Project, Canada
New Coalition for Economic and Social Change
New Hope Environmental Services, USA
New Zealand Business Roundtable, New Zealand
New Zealand Climate Science Coalition, New Zealand
Oregon Institute of Science and Medicine, USA
Pacific Legal Foundation, USA
Pacific Research Institute, USA
Polyconomics Institute, USA
Property and Environment Research Center (PERC), USA
Property Rights Foundation of America, USA
Reason Foundation, USA
Reason Public Policy Institute, USA
Rockford Institute, USA
Schiller Institute, USA
Science & Environmental Policy Project, USA
Science & Public Policy Institute, USA
Scientific Alliance, UK
Small Business & Entrepreneurship Council, USA
Sovereignty International, USA
St. Lawrence Institute, Canada
State Policy Network, USA
Sustainable Development Network, UK
TaxPayer's Alliance, UK
Tennessee Center for Policy Research, USA
The Atlas Society (TAS), USA
Thoreau Institute, USA
Tropical Meteorology Project, USA
TSAugust, USA
Urban Renaissance Institute, Canada
U.S. Chamber of Commerce, USA
Washington Policy Center, USA
Weidenbaum Center on the Economy, Government, and Public Policy, USA