- National Headache Foundation
 - Volunteer, nonprofit group established by a group of physicians to assist headache sufferers and healthcare professionals, and to increase public awareness about the debilitating nature of headaches. - American Council for Headache Education (ACHE)
- Provides education, information, and support for headache sufferers and their families.
- International Headache Society
- Promotes research into the causes, mechanisms, diagnosis, treatment, and other aspects of headache.
- Headache Network for Primary Care
- Dedicated to the understanding and advancement of improved headache care through research, education, and self-management.
- Help for Headaches
- Educational & support services to headache and migraine sufferers through newsletters, support groups, counselling, referrals, conferences, and presentations.
- Organization for Understanding Cluster Headaches (OUCH)
- Devoted to promoting public awareness of cluster headaches worldwide. Includes directory of specialists and information about conventions.
 Migraine Association of Ireland
- Provides information, self-help, and support group for sufferers of migraines and headaches.- Headache Society of Singapore
- Aims to raise awareness and provide information about headache to the public and sufferers.
- American Headache Society (AHS)
- The American Headache Society (AHS) is a professional society of health care providers dedicated to the study and treatment of headache and face pain.
- Headache Australia
- Organisation aiming to reduce the incidence and impact of headache disorders through the provision of support, community education, and research. An initiative of the Brain Foundation, Australia.
 Organization for The Understanding of Cluster Headaches - Ouch UK
- Nonprofit organisation in U.K. working to create awareness of cluster headaches within the medical professionals and the general public.
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