The Holden Dealer Team (HDT) was Holden's semi-official racing team from 1969 until 1986, primarily contesting Australian Touring Car events but also rallying, rallycross and Sports Sedan races during the 1970s. From 1980 the Holden Dealer Team, by then under the ownership of Peter Brock, diversified into producing modified road-going Commodores and other Holden cars for selected dealers via HDT Special Vehicles.