Maryland Horse Breeders Association
- Functions as an informational resource for horse breeders and owners, the media, community, government organizations and the general public.
- http://www.mdhorsebreeders.com/

Maryland Horse Industry Board
- Created in 1998 to promote the horse industry in Maryland.
- http://www.marylandhorseindustry.org/

Maryland Horse Council
- Established in 1983 to unify, inform, and represent Maryland's diverse horse and equestrian community.
- http://www.mdhorsecouncil.org/