Doomben Racecourse is a horse racing venue in Brisbane, Queensland, Australia. It is located in the suburb of Ascot, 7 kilometres north of the Brisbane central business district. The Doomben course neighbours another thoroughbred venue called the Eagle Farm Racecourse and can be accessed via car, train or bus. Together with Eagle Farm, these courses are considered the two major racecourses in South East Queensland, and can be seen sharing irrigation systems and some of Brisbane Racings feature events.

Ascot is a north-east suburb in the City of Brisbane, Queensland, Australia. In the 2016 census, Ascot had a population of 5,777 people.