National Potbelly Pig Registry
- Provides permanent registration for individuals, shelters, and breeders. Handles litter applications, ownership transfers, breeder complaints, veterinarian verification, corrections and re-issues. Includes rules, fees, and statement of purpose.
- http://www.potbellypigregistry.com

Pig Pals of NC
- Educating the public about the potbelly as a pet. Images of available animals, and adoption and contact information. Non-profit.
- http://www.pigpals.com

The Duchess Fund
- Information and articles concerning the health of Vietnamese potbellies. Database of ailments and diagnosis of recent medical cases.
- http://www.duchessfund.org

North American Potbellied Pig Association
- Nonprofit educational service. Veterinarian listings, lists of certified breeders and shelters. Tips on seasonal care, health and safety risks, holiday and vacation concerns, poisons and diseases, living accommodations, grooming, discipline and behavior,
- http://www.petpigs.com

Pigs as Pets Association
- Non-profit. Contains information on potbellies including frequently asked questions, news items, sanctuaries and adoption details. Also contains medical information, detailed history and links.
- http://www.pigsaspets.org/

United Pet Pig Registry
- Includes pictures, membership details, articles about health and training, show information, and list of upcoming events.
- http://www.upprs.com/