National Horseshoe Pitchers Association (NHPA)
Rules and regulations: http://www.horseshoepitching.com/rules/PlayingRules.html
The National Horseshoe Pitchers Association (NHPA) is the governing body of the sport in the USA since 1926. Composed of 60 charters from all over North America and Canada, NHPA strives to promote and organize the sport by coming up with standards on rules, equipment, and playing procedures. NHPA organizes horseshoe pitching tournaments at the international, state, and regional levels. It administers the Annual World Tournament, as well as open events, a league program, and a Pitch Horseshoes for Health Month held every July of each year. So far, NHPA has been successful in introducing the sport to various countries which includes South Africa, Italy, Japan, Grand Bahama Islands, Togo, West Africa, Australia, New Zealand, West Germany, Nigeria, Honduras, Canada, South America, Israel, Norway, Switzerland, Poland, Philippines, England, Sweden, Finland and Russia.