Maine Event Cat Club
- Non-profit, TICA sanctioned club in the northwest region of the United States. Comprised of breeders and exhibitors.
- http://www.themaineevent.org/

Maine Coon Guild
- Based in the United Kingdom with international contacts that aim to promote breed welfare. Details of registered breeders and show data.
- http://www.mainecoonguild.org.uk

Maine Coon Breeders and Fanciers
- Founded in 1968 to preserve, protect and promote the breed. Breed standards, articles and lists of available kittens and cats.
- http://www.mcbfa.org

Maine Coon Cat Club of Great Britain
- International club that includes breed history, guide to choosing cats, breeder list, club champions and membership data.
- http://www.maine-coon-cat-club.com/

United Maine Coon Cat Association
- Cat Fanciers' Federation club. Contains charter, history, officers, list of champions and membership data.
- http://www.cffinc.org/umcca/main.htm