- Neapolitan World - General resource featuring information on the breed, its history, standards, and health issues. Includes list of breeders worldwide, online communities and shopping links.
- Everything Neapolitan - Breed information including what to consider before buying one, how to train, caretips, breed history, and directories of rescues and breeders.
- Mastini Dogs - Features breed information, galleries, forums and galleries.
- Mastino Napoletano Netherlands - Breed history, photographs of mastiffs of the past, bloodlines, and breed colors.
- Meet Harvey and Shammy - Pictures of the first six months of their lives, information on their breeder and about their breed.
- Neapolitan Mastiff Community - On-line source for breed fanciers. Photograph gallery, forum, calendar of events, and links.
- Neapolitan Mastiff Health Care - Provides health care advice for owners.
- Neapolitan Mastiff Super Information Highway - Listing for clubs, breeders, health problems, and other information on the breed.
- The Neapolitan Mastiff Web Ring - Websites about the breed.
Rescues And Shelters
- 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.
- Allevamento De Los Santos - Colombia based breeder. Features photographs, origin, and news.
- Allevamento Titan Kennels - Antioch, Tennessee based breeder. Features litter announcements and photos.
- Altafiumara - Litter announcements, news, and information on their dogs and breeding program. Italy.
- Atlanta's House - Photographs, breed information and care tips, breeder's history, and links. Atlanta, Georgia.
- Baby Blue - Photographs, pedigrees, news, and breeding plans. Claremont, Ontario.
- Blue Blood Kennels - North Carolina based breeder. Features photos and list of puppies available.
- Canil Signori d'Arezzo - History, pictures, breed standard, and their achievements.
- Carso del Dolar - Breed description, photographs, kennel history, show results, pedigrees, and photograph album. Slovenia.
- Chavez Neo Mastinos - Photographs of their dogs and a description of the breed. Milan, Tennessee.
- Cheran - Litter announcements, photographs, news, and frequently asked questions about the breed..
- Cinciripini's - Photographs, kennel background, and information on stud services. Spanaway, Washington.
- Del Feudo Nisseno - Photographs and pedigrees of their dogs, kennel and breed history, litter announcements, historical photograph gallery, and suggested links. Los Angeles, California.
- Delle Corado Kennel - Features kennel history, litter announcements, and photographs. Romania.
- Desert Big Dog Mastiffs - Breeds and rescues dogs. Photograph gallery and memorials.
- Dommergaardens - Litter announcements, pedigrees, and related links. Denmark.
- Don Quijote's Kennel - Photographs and brief breed history.
- Drool 'N' Destruction - Photographs, pedigrees, show dates, litter announcements, and rescue links. St. Anthony, Idaho.
- Fruit d' Amour - Pictures and pedigrees of their dogs. Hungary.
- Glover Mastino Napoletano - Litter announcements, pedigrees, and photograph galleries. Czech Republic.
- Gopher Canyon - Breed history, photographs, frequently asked questions, and breeding standards. San Diego, California.
- Gothic Mastini Nepolitani - Pictures of their dogs and breeding plans. Baltimore, Maryland.
- Graecia Magna - General information on the breed and photographs. Greece.
- Ironhead Mastiffs - Pictures of their dogs and the description and history of the breed. Vero Beach, Florida.
- Ironstone - Breed information, show news, and breeding plans. Boyertown, Pennsylvania.
- Italian Imported Neos - Imports champion Neapolitan Mastiffs from Italy to the United States, from Del Gheno Allevamenti. Features online application and available puppies.
- Keeso Kennels - Photographs, pedigrees, breed information, and rescue links. Arkansas.
- Lady Of The Lake Kennel - Explanation of the kennel philosophy, photographs, and litter announcements. Millville, New Jersey.
- Lavercam - Features breed information and photographs. Wilmington, North Carolina.
- Lions Den Kennel - Photographs, pedigrees, and information on upcoming litters. Hawaii.
- Magnufi - Photographs, information on health concerns and testing, suggested reading list, kennel background, and breed information. Kerrabee, New South Wales, Australia.
- Michianti Kennel - UK based breeder. Features photographs and health information on the Neapolitan Mastiffs and Bullmastiffs.
- PSI - Utah based breeder. Includes photographs, pedigrees, and breed information.
- Pure Blooded Epur - Photographs and information on kennel dogs past and present and breed history. Serbia.
- Rocky's Hill Kennel - Pictures, breed characteristics and history, and email postcards. Burson, California.
- Runestone - Photographs, breeding plans, show pictures, and pedigrees. Minnesota.
- Seraph's Kennel - Breeder based in Sweden. Features breed information, pictures, planned litters, pedigrees, and books.
- TDY Chang's - Photographs, message board, and pedigree information.
- Thorne-Mayo - Breed information, photograph gallery, and pedigrees. Covington, Louisiana.
- Thundermug Kennels - Photographs, paintings, and litter announcements. Lowndesboro, Louisiana.
- Vesuvio - Raising dogs for pets and show. Kennel history, message board, pictures of their dogs, frequently asked questions, videos, and litter announcements. Australia.
- Vesuvius - Breed history, photographs, pedigree, and news. United Kingdom.
- Walker Kennels - Breeding plans, photographs, and memorials. Roswell, New Mexico.
- Whispering Oaks - Photograph gallery, information on import assistance, and referrals. New Ulm, Texas.