Main Coon Breed Society
- Information for prospective owners, breeders, exhibitors and members. Breeders and kitten list, showing, grooming, colour codes, gallery and history of the breed.
- http://mullycoonz.com/mcbs/

The Maine Coon Guild
- Includes details of Guild registered breeders, show information, kitten availability and breed specification.
- http://www.mainecoonguild.org.uk/

Maine Coon Cat Club
- Includes officer list, breed history, guide to choosing a kitten, breeder and kitten list, club champions, and membership information.
- http://www.maine-coon-cat-club.com/