The Mecklenburger, also called Mecklenburger Warmblut in German, takes its name from the Mecklenburg-Vorpommern region of northeastern Germany where the breed developed. Like other German warmbloods, horses are named after their region of birth and registered with that region's breed society regardless of their breeding. The name reflects geographic origin rather than a closed genetic population.
The breed registry is maintained by the Verband der Pferdezüchter Mecklenburg-Vorpommern (Association of Horse Breeders of Mecklenburg-Vorpommern), which oversees breeding standards, stallion licensing, mare inspections, and registration. The State Stud of Redefin, founded in 1812, has served as the primary breeding center and continues operating as an internationally recognized equestrian facility.
The modern Mecklenburger is identified by the distinctive brand on the left hip—the letter "M" topped with a stylized crown representing the region's ducal heritage. This brand distinguishes Mecklenburgers from other German warmbloods, though it reflects birthplace rather than necessarily distinct breeding from closely related populations.
Importantly, the Mecklenburger, like other German warmbloods except the Trakehner, functions more as a type than a closed breed. German warmblood registries maintain open studbooks, freely exchanging genetic material between regional populations, with Thoroughbreds, Arabians, and Trakehners. This open system means Mecklenburgers share bloodlines extensively with Hanoverians, Oldenburgs, and other German warmbloods while maintaining regional identity through registration and branding.

