About Mark Sheridan


  • 2018, American Buckskin Registry Association Judge
  • 2017, Palomino Horse Breeders of America Judge
  • 2016, American Paint Horse Association Judge
  • 2015, APHA Professional Horseman’s Association Member
  • 2015, APHA Certified Clinician
  • 2015, AQHA Versatility Ranch Horse Judge
  • 2000, AQHA Professional Horseman’s Association Member
  • 1993, American Quarter Horse Association Judge (AAAA Ranking)
  • 1993, National Snaffle Bit Association Judge (Category 1 Ranking)


  • Over 40 years producing winning all around show horses
  • Trained and coached four AQHYA Reserve World Champions
    in both English and Western Divisions
  • Six time judge, AQHA World Championship Show
  • Two time judge, AQHYA World Championship Show
  • Five time judge, All American Quarter Horse Congress
  • Judge NSBA World Championship Show
  • Two time judge, European Championships
  • Five time judge, Canadian Nationals
  • Three time judge, Congress Masters Judge
  • Three time judge, Australian Championships
  • Judge, Japan Western Championships
  • Judge, New Zealand Championships
  • Judge, Western Australia Quarter Horse Championships
  • Judge, Victoria Australia Quarter Horse Championships
  • Two time judge, NCAA Collegiate Nat’l Championships
  • Judge, IHSA Collegiate Nat’l Championships
  • Five time judge, Florida Gold Coast Circuit
  • Five time judge, Arizona Sun Country Circuit
  • Three time Reichert Celebration Judge
  • Authors Articles Found in Numerous Nationally Published Magazines
  • Conducts National and International Clinics
  • Assisted in Training 2013 Australian World Cup Team
  • Coached an Exhibitor for AQHA World Collegiate Horsemanship Challenge
  • Produced three DVD series on Perfect Lead Changes
  • NSBA Bootcamp Clinician


  • Graduate NE. Farrier School 1977
  • Bachelor of Science Equestrian Studies 1980
    University of Findlay, Ohio


  • University of Findlay Wall of Fame
  • 2008 Arizona Quarter Horse Association Most Valuable Professional Horseman

Offices Held:

  • Board Member-Scottsdale Community College Equine Science Advisory Committee
  • Board Member-University of Findlay Equine Science Advisory Committee
  • Past President Arizona Quarter Horse Association 2002
  • Board Member – Arizona Quarter Horse Association Since 1987
  • Past NSBA Advisory Council Member

Affiliations and Memberships:

  • American Quarter Horse Association
  • National Snaffle Bit Association
  • National Reining Horse Association
  • Arizona State Horsemen’s Association
  • Arizona Appaloosa Association
  • American Paint Horse Association
  • Pacific Coast Quarter Horse Association
  • Palomino Horse Breeders of America
  • Arizona Quarter Horse Association
  • Appaloosa Horse Club Association
  • World Conformation Horse Association
  • Pinto Horse Association of America
  • United States Equestrian Federation
  • Arizona Paint Horse Club
  • American Buckskin Registry Association
aqha award
mark hayden