Assyrian sculpture is the sculpture of the ancient Assyrian states, especially the Neo-Assyrian Empire of 911 to 612 BC, which was centered around the city of Assur in Mesopotamia (modern-day Iraq) which at its height, ruled over all of Mesopotamia, the Levant and Egypt, as well as portions of Anatolia, Arabia and modern-day Iran and Armenia. It forms a phase of the art of Mesopotamia, differing in particular because of its much greater use of stone and gypsum alabaster for large sculpture.

Much the best-known works are the huge lamassu guarding entrance ways, and Assyrian palace reliefs on thin slabs of alabaster, which were originally painted, at least in part, and fixed on the wall all round the main rooms of palaces. Most of these are in museums in Europe or America, following a hectic period of excavations from 1842 to 1855, which took Assyrian art from being almost completely unknown to being the subject of several best-selling books, and imitated in political cartoons.

The palace reliefs contain scenes in low relief which glorify the king, showing him at war, hunting, and fulfilling other kingly roles. Many works left in situ, or in museums local to their findspots, have been deliberately destroyed in the recent occupation of the area by ISIS, the pace of destruction reportedly increasing in late 2016, with the Mosul offensive.

Other surviving types of art include many cylinder seals, a few rock reliefs, reliefs and statues from temples, bronze relief strips used on large doors, and small quantities of metalwork. A group of sixteen bronze weights shaped as lions with bilingual inscriptions in both cuneiform and Phoenician characters, were discovered at Nimrud. The Nimrud ivories, an important group of small plaques which decorated furniture, were found in a palace storeroom near reliefs, but they came from around the Mediterranean, with relatively few made locally in an Assyrian style.

The palace reliefs were fixed to the walls of royal palaces forming continuous strips along the walls of large halls. The style apparently began after about 879 BC, when Ashurnasirpal II moved the capital to Nimrud, near modern Mosul in northern Iraq. Thereafter, new royal palaces, of which there was typically one per reign, were extensively decorated in this way for the roughly 250 years until the end of the Assyrian Empire. There was subtle stylistic development, but a very large degree of continuity in subjects and treatment.

Compositions are arranged on slabs, or orthostats, typically about 7 feet high, using between one and three horizontal registers of images, with scenes generally reading from left to right. The sculptures are often accompanied with inscriptions in cuneiform script, explaining the action or giving the name and extravagant titles of the king. Heads and legs are shown in profile, but torsos in a front or three-quarters view, as in earlier Mesopotamian art. Eyes are also largely shown frontally. Some panels show only a few figures at close to life-size, such scenes usually including the king and other courtiers, but depictions of military campaigns include dozens of small figures, as well as many animals and attempts at showing landscape settings.

Campaigns focus on the progress of the army, including the fording of rivers, and usually culminates in the siege of a city, followed by the surrender and paying of tribute, and the return of the army home. A full and characteristic set shows the campaign leading up to the siege of Lachish in 701; it is the "finest" from the reign of Sennacherib, from his palace at Nineveh and now in the British Museum. Ernst Gombrich observed that none of the many casualties ever come from the Assyrian side. Another famous sequence there shows the Lion Hunt of Ashurbanipal, in fact the staged and ritualized killing by King Ashurbanipal of lions already captured and released into an arena, from the North Palace at Nineveh. The realism of the lions has always been praised, and the scenes are often regarded as "the supreme masterpieces of Assyrian art", although the pathos modern viewers tend to feel was perhaps not part of the Assyrian response.

There are many reliefs of minor supernatural beings, called by such terms as "winged genie", but the major Assyrian deities are only represented by symbols. The "genies" often perform a gesture of purification, fertilization or blessing with a bucket and cone; the meaning of this remains unclear., Especially on larger figures, details and patterns on areas such as costumes, hair and beards, tree trunks and leaves, and the like, are very meticulously carved. More important figures are often shown larger than others, and in landscapes more distant elements are shown higher up, but not smaller than, those in the foreground, though some scenes have been interpreted as using scale to indicate distance. Other scenes seem to repeat a figure in a succession of different moments, performing the same action, most famously a charging lion. But these were apparently experiments that remain unusual.