The Jack Russell Terrier Club Of America (JRTCA – www.therealjackrussell.com) is the National Breed Club and Registry for the Jack Russell Terrier in the United States; it was founded in 1976 and is the largest Jack Russell Terrier Club and registry in the world. The Rocky Mountain Jack Russell Terrier Network is an affiliate club of the JRTCA.  

The Rocky Mountain Jack Russell Terrier Network is a nonprofit club consisting of a group of volunteers who are dedicated to preserving, working, and protecting the Jack Russell Terrier.