Boar, a male or female wild hog; or a male domestic hog. Wild boars are native to most of Europe and to northern Africa and southern Asia. Wild boars were one of the main animals hunted for sport during the Middle Ages and have disappeared from the British Isles and from certain other parts of their native range.

The wild boar is a fast, powerful animal weighing more than 400 pounds (180 kg). Its body is larger, leaner, and more muscular than that of the domestic hog. Its coarse coat is grayish-black, with a long bristling mane about the shoulders. Boars have sharp tusks—two in each jaw—with which they can inflict deadly wounds. They usually feed on roots, plants, nuts, and small animals.

In the early 1900's, a few wild boars were introduced into the United States for hunting. Some of these wild boars interbred with escaped domestic hogs to produce a subspecies of wild boar. Today these boars, sometimes called razorbacks, are found mainly in the southern United States, where they are agricultural pests. Wild boars have also been introduced into Central America and Argentina.

The bristles of the wild boar were formerly used in making brushes. Its meat is good to eat, but has a gamy flavor. A boar's head was served on a large platter as part of the traditional English Christmas festivities.

The European wild boar is Sus scrofa scrofa; the American, S. s. porcus. Both are of the family Suidae.