Freestyle skiing is form of skiing which used to encompass two disciplines: aerials, and moguls. Besides the two disciplines mentioned earlier Freestyle Skiing now consists of Skicross, Half Pipe and Slope Style. Freeskiing is an olympic variety which shares characteristics with street skateboarding, bmx, and inline skating.

Freestyle skiing first began to be taken seriously in the 1960s and early 1970s, when it was often known as "hot-dogging." Bob Burns who later went on to create The Ski brand skis, pioneered this style in Sun Valley, Idaho, beginning in 1965. In the late 1960s other followers of the style included Wayne Wong, Flying Eddie Ferguson, Chico and Cokie Schuler and their mentor Chris Flanagan also, Roger Evans, John Clendenin, Hermann Goellner and Tom Leroy. Some people thought that this style of skiing was too dangerous and did not want it to be an Olympic sport. The free-form sport had few rules and was not without danger; knee injuries became a common phenomenon for professional freestylers.