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The Banker horse is a breed of feral horse living on the islands of North Carolina's Outer Banks. It is small, hardy and has a docile temperament. Descended from domesticated Spanish horses brought to the Americas in the 16th century, the ancestral foundation bloodstock may have become feral after surviving shipwrecks or being abandoned on the islands by one of the exploratory expeditions of Lucas Vázquez de Ayllón and Sir Richard Grenville. Populations are found on Ocracoke Island, Shackleford Banks, Currituck Banks and in the Rachel Carson Estuarine Sanctuary.

Although they can trample both plants and ground nesting animals, and they are not considered indigenous to the islands, Bankers are allowed to remain due to their historical significance. They survive by grazing on marsh grasses. Water is usually obtained from temporary freshwater pools and from moisture in vegetation. To protect the habitat from overgrazing and avoid overpopulation and inbreeding, the horses are managed by the National Park Service, the State of North Carolina and several private organizations. Island populations are limited by adoptions and by birth control. When taken from the wild and trained by humans, Bankers are used for trail riding, driving and occasionally for mounted patrols.