USA Wrestling is effectively the US Olympic wrestling governance organization. USA Wrestling organize freestyle and greco wrestling during spring and summer as well as collegiate wrestling during winter and early spring.
United World Wrestling (UWW) is the international governing body for the sport of amateur wrestling; its duties include overseeing wrestling at the Olympics. It presides over international competitions for various forms of wrestling, including Greco-Roman wrestling, freestyle wrestling for men and women, as well as others.
NCAA Wrestling is official association that organizes wrestling for Division I, II, and III collages. NCAA Wrestling Championship takes place in March every year.
It organizes youth wrestling in elementary and middle school level.
It provides many useful resources, results, and rankings in the state of New York.
The Mat: Home of Amateur Wrestling
International Olympic Committee