Here are a list of Pedigree Registry and Associations that accept the American Bully breed.
(Image above ABKC National Grand Champion Winner Thee Buss (Pocket Bully))
The two main registry that accept the American Bully breed are:
ABKC (American Bully Kennel Club)
UKC (United Kennel Club)
Other new registry begins to appear as the breed becomes more popular includes but not limited
BRC Global Canine Pedigrees
ABR – American Bully Registry
BBKC – Bully Breed Kennel Club
BullyPedex
WBR – World Bully Registry