Sheep or domestic sheep are a domesticated, ruminant mammal typically kept as livestock. Although the term sheep can apply to other species in the genus Ovis, in everyday usage it almost always refers to domesticated sheep. Like all ruminants, sheep are members of the order Artiodactyla, the even-toed ungulates. Numbering a little over one billion, domestic sheep are also the most numerous species of sheep. An adult female is referred to as a ewe, an intact male as a ram, occasionally a tup, a castrated male as a wether, and a young sheep as a lamb.

भेड़ एक प्रकार का पालतू पशु है। इसे मांस, ऊन और दूध के लिए पाला जाता है। भारतवर्ष में क़रीब 40 नस्ल की भेड़ पाई जाती है। मादा भेड़ को भेड़ या भेड़ी कहते हैं और नर भेड़ को मेंढा या भेड़ा।