European Pig Producers
- A technical, social and economic forum for pig raisers in Europe.
- http://www.pigproducer.net/

National Pork Board
- The home for information about the pork checkoff system and checkoff-funded activities.
- http://www.pork.org

American Berkshire Association
- US national registry for the Berkshire breed of pigs. Includes organization information, news, and information for producers.
- http://www.americanberkshire.com/

Certified Pedigree Swine
- Registry of the Poland China, Chester White, and Spotted breeds in the United States. Features forms, publications, calendar, history, and show and sale results.
- http://www.cpsswine.com/

National Swine Registry
- Registry for the Yorkshire, Hampshire, Duroc, and Landrace breeds. Services include litter registrations, performance pedigrees, breed promotion, and marketing assistance.
- http://www.nationalswine.com/

National Pork Producers Council
- National Pork Producers Council focuses on the legislative and public policy issues for its members. Based in Washington, D.C., the NPPC develops strategy and is the primary liaison for pork producers with Congress, the U.S. Department of Agriculture and
- http://www.nppc.org/

Iowa Pork Producers Association
- Provides leadership in areas related to the industry in order to enhance Iowa pork producers' opportunity, profit, success and stewardship.
- http://www.iowapork.org/

CANSWINE
- Canada's Swine Breeders Association.
- http://www.canswine.ca/

Arkansas Pork Producers Association
- Provides organizational structure and avenues of service which our membership can promote pork as the Meat of Choice in the 21st century.
- http://www.cei.net/~appa1357

The Canadian Duroc
- Since its introduction into Canada at the turn of the century, the Duroc has become one of the country's most popular breeds. Information and contact for breeders' association.
- http://www.canswine.ca/duroc.html