The Caspian horse is one of the oldest horse breeds in the world and probably the first oriental domesticated horse. For centuries thought the breed had been considered extinct, until it was "rediscovered" in 1965 in Iran. The breed is quite important in the history of horse breeding, however, it is still little known. The aim of the work was to present the characteristics of the breed (conformation, characteristics and usage) and to assess the current state of the population in Europe and around the World. A survey was conduct among 18 breeders and included 120 horses. The population size was estimated based on the analysis of two breed registries. This study confirms and supplies information about Caspian horses available in the literature. Caspian horses can be very useful in refining small breeds of horses and could bring many profits in Polish breeding of sport ponies.