The Don horse takes its name from the Don River region in southwestern Russia, where Cossack communities developed these horses over centuries. The river's name, derived from ancient Scythian and Sarmatian languages meaning simply "river" or "water," connects these horses to millennia of steppe horse-keeping traditions. In Russian, the breed is called Donskaya, with the anglicized "Don" serving as the common international name.
The All-Russian Scientific Research Institute of Horse Breeding maintains the breed registry and studbook, documenting Don horse pedigrees and overseeing breeding standards. This institution continues the work of earlier Soviet and Imperial Russian breeding programs that developed and refined the Don into its modern form. Registration ensures genetic documentation of a breed whose numbers declined significantly during the 20th century.
Like all domestic horses, the Don carries the scientific classification Equus ferus caballus. Within this broad species, the Don represents one of several Russian breeds developed for military and agricultural purposes, closely related to the Budyonny and other breeds that share Don bloodlines. Genetic studies confirm the breed's distinctive heritage, combining steppe-adapted stock with various refined influences.
The breed is sometimes confused with the Budyonny, a related but distinct breed developed after World War I by crossing Don horses with Thoroughbreds. While sharing ancestry and some characteristics, the Don represents the older, more traditional type, while the Budyonny was specifically created for Soviet cavalry and sport horse purposes. Both breeds share the characteristic golden coloring common to Don bloodlines.

