United States Border Collie Handlers' Association (USBCHA)

http://www.usbcha.com/

Holds sheepdog and cattledog trials throughout the United States and Canada and two major events, the National Sheepdog Finals and the National Cattledog Finals.

American Herding Breed Association (AHBA)

http://www.ahba-herding.org/

Dogs of all herding breeds including rare breeds, as well as multi-purpose breeds which also have been used for herding, and herding breed mixes are eligible to compete in trials, which focus on practical herding work. The AHBA Herding Trial Program allows dogs to demonstrate herding ability in herding trials at started, intermediate, and advanced levels on a standard course and on farm/ranch courses which vary in detail but include specified requirements.

American Kennel Club (AKC)

http://www.akc.org/events/herding/

Dogs of AKC recognized herding breeds, dogs with Purebred Alternative Listing Program (PAL), breed mixes with Indefinite Listing Privilege (ILP) or dogs with Conditional registration are eligible to compete in instinct tests and a competitive herding trial program.

Australian Shepherd Club of America (ASCA)

http://www.asca.org/programs/stockdog

Divisions in ASCA sanctioned trials are offered for three levels of training on three classes of stock. Other breeds recognized as herding dogs by ASCA besides Australian Shepherds can also compete and earn titles.

Canadian Kennel Club (CKC)

http://www.ckc.ca/en/Events/Overview-of-Events/Herding-Trials

Herding tests and trials, open to all CKC approved breeds.