Assyriology (from Greek Ἀσσυρίᾱ, Assyriā; and -λογία, -logia) is the archaeological, historical, and linguistic study of ancient Mesopotamia (ancient Iraq) and as related cultures that used cuneiform writing. The field covers the Akkadian sister-cultures of Assyria and Babylonia, together with their cultural predecessor; Sumer. The large number of cuneiform clay tablets preserved by these cultures provide an extremely large resource for the study of the period. The region's (and the world's) first cities such as Ur are archaeologically invaluable for studying the growth of urbanization.

Scholars need a good knowledge of several languages: Akkadian and its major dialects and Sumerian, aided by such languages as Biblical Hebrew, Hittite, Elamite and Aramaic for comparative purposes, and the knowledge of writing systems that use several hundred core signs. There now exist many important grammatical studies and lexical aids. Although scholars can draw from a large corpus of literature, some tablets are broken, or in the case of literary texts where there may be many copies, the language and grammar are arcane. Moreover, scholars must be able to read and understand modern English, French, and German, as important references, dictionaries, and journals are published in those languages.