Northeastern Society of Orthodontists
- Features a directory of officers, meetings and education programs, a newsletter and a list of programs.
- http://www.nesortho.org/

Greek Orthodontic Society
- Provides bylaws, membership fees and an application, activities, a directory of the Board of Trustees and committees, a journal and links. Located in Athens, Greece. [Greek and English]
- http://www.grortho.gr/

LingualOrtho
- Provides a discussion group for orthodontists, dentists, orthodontic technicians and other related health professionals.
- http://groups.yahoo.com/group/LingualOrtho/

The European Orthodontic Society
- Membership information, an index of the orthodontic literature (pdf).
- http://www.eoseurope.org/

The Orthodontic National Group
- Specialist group for Orthodontis Dental Nurses throughout the United Kingdom and Eire.
- http://www.orthodontic-ong.co.uk

Southern Association of Orthodontists
- News, meeting information, leadership contacts and links to resources for orthodontists and staff. The society covers the southern part of the United States.
- http://www.saortho.org

American Association of Orthodontists
- Includes news, history, directory, education and career information, calendar, and regional society information.
- http://www.braces.org/

International Association of Facial Growth Guidance
- Society devoted to BioBloc therapy.
- http://www.orthotropics.com/

American Academy of Gnathologic Orthopedics
- Society promoting nutritional and alternative treatment for orthodontic patients.
- http://www.aago.com/

British Orthodontic Society
- Information about orthodontics in the UK.
- http://www.bos.org.uk/

American Orthodontic Society
- Society promoting orthodontics by general and pediatric dentists.
- http://www.orthodontics.com/

New Zealand Association of Orthodontists
- Society for board certified orthodontists in New Zealand.
- http://www.orthodontists.org.nz/

Americal Association of Orthodontists
- Official organization for board qualified and board certified orthodontists.
- http://www.aaortho.org

American Association for Functional Orthodontics
- Society specializing in functional appliances (removable braces).
- http://www.aafo.org/

California Association of Orthodontists
- Forum for members, discussions of current issues, links.
- http://www.caortho.org/

Canadian Association of Orthodontists
- Information on braces, teeth, bite, and the Canadian Association of Orthodontists.
- http://www.cao-aco.org/

College of Diplomates of the American Board of Orthodontists
- A society dedicated to the improvement of orthodontics in education, ethics, responsibility, and competence in practice.
- http://www.cdabo.org/

Association of Orthodontists - Singapore
- Information about orthodontics and dentistry in Singapore and Malaysia.
- http://www.aos.org.sg/

Charles H. Tweed International Foundation
- Promotes excellence in orthodontic treatment. Services include a course and workshop, loan program and assistance in publishing papers.
- http://www.tweedortho.com/

World Federation of Orthodontists
- Annual meeting information, lists of meetings of other societies.
- http://www.wfo.org/

Pacific Coast Society of Orthodontists
- Meeting information, forum for member dentists, links to resources for orthodontic assistants and prospective orthodontists. The society covers the western part of the United States.
- http://www.pcsortho.org/

Academy of GP Orthodontics
- Academy dedicated to serve the continuing education needs of general dentists in orthodontic practice.
- http://www.academygportho.com/

Ontario Association of Orthodontists
- Membership lists, before and after pictures, answers to patient's questions.
- http://www.oao.on.ca/

Egyptian Orthodontic Society
- Meeting information, educational resources in Egypt, and online journal.
- http://www.egortho.org

Australian Society of Orthodontists
- Contains contact and meeting information, general orthodontic information and how to find an orthodontist.
- http://www.aso.org.au/