The Great Dane, also denoted as Grand Danois, is a German breed of domestic dog (Canis lupus familiaris) known for its giant size. The name of the breed in Germany is Deutsche Dogge (German Mastiff). They are known for their enormous bodies and great height.

The Great Dane is one of the world's tallest dog breeds; the current world record holder, measuring 112 cm (44 in) from paw to shoulder, is "Zeus". Their large size belies their friendly nature, with Great Danes known for seeking physical affection with their owners.