Australian National Rodent Association - Promotes breeding showing and care of fancy rats in Queensland and all over Australia.

Australian Rat Fanciers Society - Australian Rat Fanciers Society serving owners exhibitors and breeders of Fancy Rats and Mice in Australia.

Australian Rat Fanciers Society in Victoria. - Victorian Branch of the AusRFS with information on local breeders.

Australian Rodent Fanciers Society - Tasmanian Branch - Tasmanian branch of an Australia-wide Rat and Mouse club. Information on common Rodent Myths and current campaigns are some of the highlights of this site.

Midlands Rat Club - Providing a dedicated resource for rat lovers in the Midlands of the UK.

Midwest Rat Enthusiasts - RSA-affiliated club for pet rat lovers and breeders located in the midwest United States.

National Fancy Rat Society - Contains articles a show calendar and membership information.

North American Rat Registry - Registry open to any rat owner or breeder living in North America. Trial memberships available.

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.

Rat Lovers' Association of Southern California - A non-profit organization that promotes domestic rats as companion animals.

Rat Rehoming Register - Located in the UK. Keeps information on people willing to rehome rats.

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.

Scottish Rat Club - Includes show details membership details and information for pet rat owners.

Southern California Rat Rescue - A volunteer non-profit organization dedicated to helping abused and abandoned domestic rats throughout Southern California.

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.

Yorkshire Rat Club - Rat club based in Leeds UK. Promoting shows and rat keeping.