• American Equestrian Alliance - not-for-profit association of horse owners, trainers, stables, farms, ranches, and equestrian related businesses.
• American Horse Shows Association - includes a calendar of events from around the country.
• Association for Horsemanship Safety and Education - promotes horsemanship safety through instructor certification, site accreditation, and instructional materials.
• California Historical Artillery Society - horse drawn artillery unit reenacting history from 1840-1918. Also home of the 3rd US Battery L & M.
• Canadian Equestrian Federation (CEF) - coast-to-coast network of riders, competition organizers, officials, coaches and interested supporters.
• Equestrian Federation of Australia (Victorian Branch) - includes show results, rules, events calendar, and contact list.
• Equestrian Federation of Ireland - national governing body for show jumping, eventing, and dressage.
• Green Mountain Horse Association, Inc. (GMHA) - promotes recreational, educational, and competitive horse activities in Vermont. Also maintains and develops multiuse trails.
• Horse Industry Alliance (HIA) - committed to enriching lives through horses and dedicated to providing opportunities to anyone who wishes to experience riding.
• Horsemen of Iowa - equestrian organization that promotes and supports equine events, show facilities, and equine 4-H organizations in north Iowa.
• New Jersey Horse Shows Association, Inc. - providing newsletter, show calendar, rules, specs, standings, and more.
• New Zealand Equestrian Federation
• Northlands Horsemen's Association - educational source for the public and horse community to share information about equine shows and events clinics.
• Santa Cruz County Horsemen's Association - member's interests vary from showing and competitive trail riding, to enjoyment of a quiet day on the trail.
• United States Combined Training Association - USCTA is the national governing and sactioning body for the sport of horse trials, combined tests and three-day events.
• United States Equestrian Team - nonprofit organization which selects, trains, equips, finances and promotes equestrians for major international competitions.

By Breed/Event

• American Horse Council (AHC) - national trade association representing the horse industry in Washington, DC.
• American Horse Defense Fund - facilitates the protection, conservation, and humane treatment of members of all Equid species through education, advocacy, and litigation.
• Paint Horse - American Paint Horse Association - through breed promotion, the association strives to increase public awareness of the American Paint Horse.
• Morgan - American Morgan Horse Association
• Warmblood - American Warmblood Registry (AWR) - promotes the integrity of warmbloods. Affiliated with AHSA.
• Warmblood - American Warmblood Society - The AWS ensures the selective breeding of the ideal sporthorse, a sporthorse that is noble and correctly built, of the modern type, and is capable of superior performance in the Olympic disciplines by monitoring breeding through inspection.
• Andalusian - International Andalusian and Lusitano Horse Association - non-profit association and registry for Andalusian and Lusitano horses dedicated to education and promotion of the breed.
• British Equestrian Federation (BEF) - represents the sports of show jumping, eventing, dressage, horse driving trials, endurance riding, and vaulting.
• British Horse Society - represents and promotes horse riding in the UK and abroad, including training, welfare, safety, and career qualifications.
• British Horse Society North West Region - details of regional events, shows, and training opportunities for members in the North West of England.
• British Horse Society Scotland - equestrian charity active in the fields of access, safety, training, and welfare.
• Clydesdale Horse Society - includes a history of the breed, the breeders stud book, and a photo gallery.
• Cutting Horse - American Cutting Horse Association - includes a calendar, show results, and membership information.
• Cutting Horse - Arizona Cutting Horse Association - promotes the cutting horse by holding weekend shows, aged events, clinics, and more.
• Cave Creek Cutting Club - club in Central Arizona that promotes training and showing of cutting horses. Offers clinics, a winter show circuit, year end awards, and more.
• Cutting Horse - National Cutting Horse Association - the latest updates and news, how to subscribe, event schedules, and event results.
• Cutting Horse - Ohio Cutting Horse Association - includes information on events, standings, membership, and more.
• Draft Horse - Oberlander Draft Horse Association - works to establish the Oberlander horse in North America. Site offers information on breeders, stallions, events, horses for sale, and more.
• Draft Horse - Oklahoma Draft Horse and Mule Association
• Draft Horse - Prince Edward Island Draft Horse Association - information on members and a database of PEI draft horses along with other related information and links.
• Draft Horse - Virginia Draft Horse and Mule Association (VDHMA) - promotes the care, use, and enjoyment of draft horses, mules, and donkeys.
• Draught - Irish Draught Horse Society
• Draught - Irish Draught Horse Society Mayo Branch - includes information on sales and breeders.
• Equestrian Federation of Ireland - national governing body for show jumping, eventing, and dressage.
• Endurance - American Endurance Ride Conference - official sanctioning body for equine endurance rides in the USA and Canada.
• Endurance - Florida Endurance Riders Association (FERA) - promoting the sport of endurance riding in the state of Florida, by acting as an education and resource center.
• Foxtrotting - International Foxtrotting Horse Breed Trainers Association - promotes and develops activities on behalf of the Foxtrotting Horse and the training profession for the benefit and protection of the members of this association.
• Friesian - Australian Friesian Horse Society - offers news, links, and photos.
• Gaited Horse International Association - non-profit organization dedicated to promoting gaited horses worldwide.
• Halfinger - Haflinger Society of Great Britain - includes breed information, haflinger goods, show results, and inspection details.
• Hanoverian - American Hanoverian Society - non-profit corporation dedicated to breeding and promotion.
• Hanoverian - Hannoveraner - for members of the German horse community.
• Hanoverian - Hanoverian Breeding Club of Western Canada - offering licensing, registration, and pedigree information.
• Hunter/Jumper - Idaho Hunter Jumper Association - show schedules and results, rules, membership, and more.
• Hunter/Jumper - International Jumper Futurity - program to develop show jumping talents in US breed horses.
• Hunter/Jumper - Georgia Hunter Jumper Association - organized to promote and standardize all recognized hunter jumper horse shows in the state of Georgia. An affiliate of the American Horse Shows Association.
• Hunter/Jumper - Washington State Hunter's & Jumper's Association
• ICEgaiters - features tack, suppies, history, calendar, and members.
• Icelandic - United States Icelandic Horse Congress - maintains the U.S. registry, regulates breeding and competition, and provides a network for sharing information on events and services.
• Irish Horse Society - allows you to stay in touch with the horse community in Ireland.
• Morgan Single-Footing Horse Association - for and about registered Morgan horses who do an "extra" gait as opposed to the more common walk, trot, and canter.
• Morgan - National Morgan Reining Horse Association (NMRHA) - sponsoring a derby, youth challenge competition, and novice non-pro awards.
• Norwegian Fjord Horse Registry
• Palomino - Golden State Palomino Association
• Palomino - New Mexico Palomino Exhibitors Association (NMPEA) - features news, shows, and awards.
• Palomino - Oklahoma Palomino Exhibitors Association (OPEA) - includes a stallion database and futurity details.
• Palomino Horse Association (PHA) - with the original Palomino registry founded in 1936 by Dick Halliday in California.
• Palomino Exhibitors Association of Ohio (PEAO) - includes news and show dates.
• Palomino Horse Breeders of America (PHBA) - includes background, membership, and events.
• Paso Fino - Deep South Paso Fino Horse Association - for both amateur owners and professional trainers in Louisiana, Alabama, and Mississippi.
• Paso Fino - Northeast Paso Fino Horse Association - includes farms, trainers, events, and links.
• Pinto Horse Association of America - non-profit corporation formed for the purpose of maintaining and servicing a registry for the Pinto breed and promoting interest in the Pinto horse.
• Pleasure - Mountain Pleasure Horse Association (MPHA) - dedicated to the preservation of Mountain Pleasure Horse bloodlines (also called Country Saddle).
• Hendra Pony Club - calendar of events, photos, and membership and muster details of the club.
• Pony - New Zealand Pony Club Association (NZPCA)
• Pony Club Association of Qld
• Pony Club Association of Victoria - includes information, calendar, games, and quizzes.
• Pony - United States Pony Clubs, Inc. - official site.
• Racking Horse - Houston Walking and Racking Horse Association - with newsletter, HWAHA shows, calendar, and futurity information.
• Racking Horse - National Racking Horse Association - with current rulebook, champions and high pointers, registration and transfer forms, and more.
• Racking Horse Breeders' Association of America (RHBAA) - official site featuring world grand champions, registration information, news, trainer directory, and show calendar.
• Reining - California Reining Horse Association - offers local show dates, standings, a trainers' directory, and more.
• Reining - National Reined Cow Horse Association (NRCHA) - includes news, events calendar and results, membership information, and more.
• Snaffle Bit - National Snaffle Bit Association (NSBA) - Official site, featuring membership information, upcoming events, point standings, and more.
• Selle Francais - North American Selle Francais Association - information about the breed, stallions, registration, and membership.
• Sound Horse Organization - opposed to the soring and abuse of the Tennessee Walking show horse.
• Thoroughbred - California Thoroughbred Breeders Association - info on California breeding and horseracing.
• Thoroughbred - Florida Thoroughbred Breeders' and Owners' Association (FTBOA)
• Thoroughbred - New Zealand Thoroughbred Breeders' Association - for all people interested in breeding, buying, racing and learning about the New Zealand thoroughbred.
• Thoroughbred Breeders Australia - the Peak Industry Body and the Representative Body for all thoroughbred breeders in Australia.
• Thoroughbred Breeders New South Wales - aims to promote, advance, encourage, and co-ordinate the thoroughbred breeding industry.
• Thoroughbred Owners & Breeders Association - formed to promote and improve thoroughbred breeding and racing.
• Thoroughbred Racing Associations - includes an online job bank, details of the Eclipse Awards, Visa Series, and more.
• Trail Riders - Back Country Horsemen of America - dedicated to preserving the historical right to use recreational stock in the back country.
• Trail Riders - BC Competitive Trail Riders Association (BCCTRA) - dedicated to promoting and improving the rapidly growing sport of competitive trail riding in B.C.
• Trail Riders - Mesa Verde Backcountry Horsemen - private group sponsoring rides, education about the enjoyable use of horses, and information and activities related to wilderness preservation.
• Trail Riders - Riverside Recreational Trails - community organization dedicated to the enjoyment and preservation of Southern California horse trails.
• Trail Riders - Sauratown Trails Association - offers riding and hiking trails developed and maintained on private land.
• Vaulting - American Vaulting Association - sanctioning body for U.S. competition in the sport of Vaulting - gymnastics performed on the back of a moving horse.
• Waler Horse Society of Australia - outlines the history of Walers and aims to preserve and promote this truly Australian breed of horse.
• Walker - National Walking Horse Association
• Welsh Pony - Dutch Welsh Pony and Cob Studbook (NWPCS) - association keeps records of the particulars of all imported or Dutch-bred Welsh Ponies.
• Welsh Pony - Northeastern Welsh Pony Association (NEWPA) - offers award, show, and event information.
• Welsh Pony and Cob Society - established in 1901 to record the pedigrees of Welsh ponies and cobs.
• Welsh Pony and Cob Society of America, Inc. - offers a history of the breed, calendar of events, contact information, and photos of national shows.
• Wild Horse and Burro Freedom Alliance - formed to protect America's wild horses and burros as an integral part of our public lands.