The Knabstrup Sport Horse is a subtype of the Knabstrup horse, which is characterized by a lighter and more athletic conformation than that of the original (Baroque) Knabstrup horse.

The Knabstrup Sport Horse was created by crossing classical 'Baroque' Knabstrups with European Warmblood Sport Horses in order to turn the Knabstrup into a lighter breed. Therefore, studbooks of Knabstrup Sport Horses accept horses who are not entirely purebred. That said, only a handful of breeds are approved by the studbook: Danish Warmblood, Frederiksborg, Holsteiner, Oldenburg, and Trakehner. In addition, there are also a number of non-warmblood breeds which the studbook accepts: Arabian, Shagya Arabian, Anglo-Arab, and Thoroughbred.

Compared to the original (Baroque) conformation of the Knabstrup breed, Knabstrup Sport Horses have a smaller head, a longer neck, a longer back, prominent withers, and an overall leaner and lighter build. As a result of this conformation, Knabstrup Sport Horses are more suitable for show-jumping and cross-country than the Baroque Knabstrup.

Knabstrup Sport Horses are often bay, brown, black, or chestnut in color, though other colors can be found as well. and mostly come in all patterns of spotted coats, and even though solid-colored individuals also exist, they must breed only with spotted Knabstrups. Grey, piebald, and skewbald horses are forbidden from breeding. Knabstrup Sport Horses can stand anywhere between 14.2hh and 17hh.