England
Cambridge Humanist Group
Chiltern Humanists
Cornwall Humanists
Hampstead Humanist Society
North East Humanists
Sheffield Humanist Society
South Place Ethical Society
Suffolk Humanists
Holland
Humanistisch Verbond Apeldoorn (Netherlands)
Northern Ireland
Belfast Humanist Group
Scotland
Humanist Society of Scotland
The USA
Alabama
Alabama Freethought Association
The Mobile Atheists
Skeptics-Freethought of North Alabama
Arizona
Humanist Society of Greater Phoenix
Tucson Atheists
Arkansas
Campus Association of Freethought
(University of Arkansas - Fayetteville)
California
Atheist Coalition
Atheists and Other Freethinkers
Atheists of the San Francisco Region
Atheists of Silicon Valley
Atheists United
Atheists United - San Luis Obispo
Center for Inquiry-West
East Bay Atheists
Freethinkers Toastmasters
Freethinkers of Ventura County
Humanist Association of the Greater Sacramento Area
Humanist Association of San Diego
Humanist Community
Humanist Society of Santa Barbara
San Francisco Atheists
Secular Humanists of the East Bay
Shasta Atheists and Freethinkers
Stanford Humanists
Colorado
Atheists and Freethinkers of Denver
Atheists of Northern Colorado
Boulder Atheists
Freethinkers of Colorado Springs
Connecticut
Humanist Association of Central Connecticut
Northeast Atheist Association of Connecticut
Florida
Atheists of Florida
First Coast Freethought Society
Free Inquiry Society of Central Florida
Humanist Society of Gainesville
Humanists of Florida Association
Humanists of the Suncoast
Kennedy Space Center Freethinkers
St. Petersburg and Largo Area Secular Humanists (SPLASH)
Space Coast Freethought Association
Space Coast Objectivism Promoters and Explorers (Objectivist Club at UCF)
Wonderful Atheists of Central Florida
Georgia
Atlanta Freethought Society
Fellowship of Reason
Georgia Atheists
Savannah Community of Reason
Idaho
Humanists of Idaho
Idaho Atheists
Illinois
Secular Humanist Society of Chicago
Indiana
Humanist Friendship Group of Central Indiana
Kansas
Heartland Humanists
Kentucky
Free Inquiry Group
Louisiana
New Orleans Secular Humanist Association
Maine
Maine Atheists Union
Maryland
Baltimore Ethical Society
Baltimore Secular Humanists
Frederick Secular Humanists (FRESH)
Maryland Atheist Network
Maryland-DC Chapter of Washington Secular Humanists
Massachusetts
Atheist Discussion Group
Michigan
Freethought Association of West Michigan
The Great Lakes Humanist Society
Michigan Atheists
Minnesota
Humanists of Minnesota
Lake Superior Freethinkers
Minnesota Atheists
Red River Freethinkers
Missouri
Community of Reason
Rationalist Society of St. Louis
Montana
Montana Freethinkers
Nevada
Humanist Association of Las Vegas and Southern Nevada (HALVASON)
New Hampshire
Secular Humanist Friendship Group of Merrimack Valley
New Jersey
Center for Inquiry-Metro NY
New Jersey Humanist Network
New York
Atheists Agnostics and Freethinkers at NYU
Capital District Humanist Society
Center for Inquiry-Metro NY
Ethical Culture Society of Queens
Freethinkers of Upstate New York
Long Island Secular Humanists
Metro Atheists of New York
New York City Atheists
Secular Humanist Society of New York
North Dakota
Red River Freethinkers
Ohio
Free Inquirers of Northeastern Ohio
Free Inquiry Group
Humanist Community of Central Ohio
Students for Freethought at the Ohio State University
Oregon
Corvallis Secular Society
Eugene Round Earth Society
Humanists of Greater Portland
Lane County Secular Society
Oregonians for Rationality
United States Atheists
Pennsylvania
Freethought Society of Greater Philadelphia
Humanist Community Services of Northeast PA
Pennsylvania Nonbelievers
Philadelphia Association for Critical Thinking
South Carolina
Secular Humanists of the Lowcountry
Secular Humanists of the South Carolina Midlands
South Carolina Atheists
Upstate South Carolina Secular Humanists
Tennessee
Rationalists of East Tennessee
Texas
Agnostic and Atheist Student Group at Texas A&M
Asimov Humanists (The Humanist Association of Montgomery County, Isaac Asimov Chapter)
Atheist Community of Austin
Freethinkers Association of Central Texas
Houston Church of Freethought
Humanist Association of Ft. Worth
Metroplex Atheists
North Texas Church of Freethought
North Texas Skeptics
Texas Secular Society
Utah
Atheists of Utah
Freethought Society of Northern Utah
Humanists of Utah
Intelligent Inquiry Educational Society
Salt Lake Valley Atheists
Virginia
Americans United for Separation of Church and State: Virginia Chapter
Central Virginia Secular Humanists
Richmond Area Free Thinkers
Washington Area Secular Humanists Northern Virginia Chapter
Washington (state)
Ethical Culture Society of Puget Sound
Humanists of North Puget Sound
Humanists of Washington
Pacific Northwest Skeptics
Washington State Atheist, Agnostic, and Freethought Organizations
Washington, D.C.
Maryland-DC Chapter of Washington Secular Humanists
Washington Area Secular Humanists
Washington Ethical Society
Wisconsin
Americans United for Separation of Church and State Wisconsin Chapter
Atheists and Agnostics of Wisconsin
FreeThought Society of Wisconsin
Humanist Quest of Milwaukee
Lake Superior Freethinkers
North East Wisconsin Humanists
Southeastern Wisconsin Freethinkers (SWiFT)
