Alison Hunter Memorial Foundation - Myalgic encephalopathy and chronic fatigue syndrome information for patients and medical professionals.

Massachusetts CFIDS Association - Research information, medical and public education, and advocacy and support services.

American Association for Chronic Fatigue Syndrome - AACFS - Organization of research scientists, physicians, licensed medical healthcare professionals, and other individuals and institutions interested in promoting the stimulation, coordination, and exchange of ideas for CFS research and patient care.

CFIDS Emergency Relief Services, Inc. - Helps primarily people with CFS, who having no other recourse, would endure hunger, homelessness and/or medical deprivation.

Wisconsin Chronic Fatique Syndrome Association - An information, advocacy and support site for CFS and Fibromyalgia Syndrome.

National CFIDS Foundation - Information, newsletter, online library and links are a few of the topics to be found.

R.E.S.C.I.N.D. - Promotes recognition of four related conditions: CFIDS/M.E. (Chronic Fatigue Syndrome), Fibromyalgia, Gulf War Syndrome, and Multiple Chemical Sensitivity.

New Jersey Chronic Fatigue Syndrome Association - Made up of people with CFS and here to support, inform and help you to deal with this serious illness. An in depth look at this syndrome as well as frequently asked questions.

Chronic Fatigue Syndrome Association of Long Island - This is a regional and national organization dedicated to combating all aspects of CFS and Fibromyalgia.

The Chronic Fatigue Syndrome Society for Neuroimmunomodulation Research - Organization promoting neuroimmunomodulation based treatment and cure for CFS.

Chicago CFS Association - Serving people with Chronic Fatigue Syndrome and Fibromyalgia.

Nightingale Research Foundation - Dedicated to the study and treatment of M.E. / CFS.

The Connecticut CFIDS & FM Association, Inc. - Providing support to patients in Connecticut with chronic fatigue immune dysfunction syndrome, CFIDS, chronic fatigue syndrome, CFS, fibromyalgia syndrome, FM.

Northern Rivers ME/CFS/FM Support Association - Support Association for people with ME/CFS/FM - ME/FM Country Network

M.E.S.S. - Myalgic Encephalomyelitis (CFS) Support Services offers information and support for CFS patients.

Compassion in Action Foundation and Centre - Situated in Ottawa, Ontario. Provides specialized treatment, dedicated illness management programs, and education for CFS and FM sufferers to facilitate the rebuilding of their lives and well-being in a context of hope and compassion.