Kiwi Rat Resource
- New Zealand's official rat club focusing on rescues and rat care. Site includes a vet directory, forum, shop and breed list.
- http://www.ratclub.org

Great Lakes Fancy Rat Association
- A Michigan-based social club dedicated to promoting fancy rats as the wonderful companion animals that they are. Site includes calendar of events, code of ethics, store, and forum.
- http://www.glfra.com/

RatsPacNW
- A 501(c)4 non-profit organization bringing together fanciers and breeders of rats in the Pacific northwest.
- http://www.ratspacnw.org/

Northern Illinois Rat Organization
- An organization dedicated to improving the rat fancy through careful and responsible breeding according to RSA standards.
- http://www.niro-usa.org/

Society of Michigan Rat Fanciers
- Non-profit club dedicated to improving the care and health of domestic rats and encouraging responsible ownership. Includes bylaws, a forum, FAQs, information about activities, a membership application and articles. Located in Port Huron, Michigan, USA.
- http://www.michiganrats.org/

RatEthics
- Dedicated to promoting the ethical keeping, breeding and raising of domesticated pet rats.
- http://www.ratethics.org

Midwest Rat Enthusiasts
- RSA-affiliated club for pet rat lovers and breeders located in the midwest United States.
- http://www.midwestrats.org

Rat Society of America
- Parent organization for North American rat clubs dedicated to improving the rat fancy, creating uniform standards, educating the public on the care of pet rats and encouraging responsible breeding.
- http://www.ratsociety.org

North American Rat Registry
- Registry open to any rat owner or breeder living in North America. Trial memberships available.
- http://www.ratregistry.org

Midlands Rat Club
- Providing a dedicated resource for rat lovers in the Midlands of the UK.
- http://www.midlandsratclub.org

Scottish Rat Club
- Includes show details, membership details and information for pet rat owners.
- http://www.scottishratclub.co.uk

Yorkshire Rat Club
- Rat club based in Leeds, UK. Promoting shows and rat keeping.
- http://www.yorkshireratclub.com

North of England Rat Society
- Resources and meetings for rat lovers in the North of England and beyond. Includes information on showing rats and varieties.
- http://www.neratsociety.co.uk

Australian Rat Fanciers Society
- Serving owners, exhibitors and breeders of fancy rats and mice. Includes a competition calendar, photographs, membership details, show dates, results, and links to ratteries.
- http://www.ausrfs.org.au/

National Fancy Rat Society
- Contains articles, a show calendar and membership information.
- http://www.nfrs.org

The Rat Fan Club
- A club devoted to rats as pets. Rat lovers can find the answers to questions about rat health, games, tricks, and toys for their rats and themselves.
- http://www.ratfanclub.org/

Rat Rehoming Register
- Located in the UK. Keeps information on people willing to rehome rats.
- http://www.ratrehome.co.uk/