American Society for the Preservation of the Neapolitan Mastiff - Dedicated in the promotion and preservation of the breed. Historical pictures breed history and standard organization information membership application news and a calendar of events.

Canadian National Neapolitan Mastiff Club - Their code of ethics newsletter photograph gallery membership application and a message board.

Garden State Neapolitan Mastiff Club - New Jersey club offers membership and show information photographs forums and news.

Mastino Napoletano Club of New Ssouth Wales - Features information on shows in Australia and information on health breeders items for sale and club membership.

Neapolitan Mastiff Club of Canada - News their code of ethics discussion forum and how to join.

The Neapolitan Mastiff Club United Kingdom - History and standard of the breed code of ethics show schedules and news rescue contacts and tips for new owners.

United States Neapolitan Mastiff Club - Breed and club information updates on shows and events news and health articles.