Thoroughbred racing is a sport and industry involving the racing of Thoroughbred horses. It is governed by different national bodies. There are two forms of the sport – flat racing and jump racing, the latter known as National Hunt racing in the UK and steeplechasing in the US. Jump racing can be further divided into hurdling and steeplechasing.

Horse racing is an equestrian performance sport, typically involving two or more horses ridden by jockeys over a set distance for competition. It is one of the most ancient of all sports, as its basic premise – to identify which of two or more horses is the fastest over a set course or distance – has been mostly unchanged since at least classical antiquity.