Media (Old Persian: 𐎶𐎠𐎭 Māda; Greek: Μηδία Mēdía; Akkadian: Mādāya) was a political entity centered in Ecbatana that existed from the 7th century BCE until the mid-6th century BCE and is believed to have dominated a significant portion of the Iranian plateau, preceding the powerful Achaemenid Empire. The frequent interference of the Assyrians in the Zagros region led to the process of unifying the Median tribes. By 612 BCE, the Medes became strong enough to overthrow the declining Assyrian empire in alliance with the Babylonians. However, contemporary scholarship tends to be skeptical about the existence of a united Median kingdom or state, at least for most of the 7th century BCE.

According to classical historiography, Media emerged as one major power of the ancient Near East after the collapse of Assyria. Under Cyaxares (r. 625–585 BCE), the kingdom's borders were expanded to the east and west through the subjugation of neighboring peoples, such as the Persians and Armenians. Media's territorial expansion led to the formation of the first Iranian empire, which at its height would have exercised authority over more than two million square kilometers, stretching from the eastern banks of the Halys River in Anatolia to Central Asia. In this period, the Median empire was one of the great powers in the ancient Near East alongside Babylon, Lydia, and Egypt. During his reign, Astyages (r. 585–550 BCE) worked to strengthen and centralize the Median state, going against the will of tribal nobility, which may have contributed to the kingdom's downfall. In 550 BCE, the Median capital, Ecbatana, was conquered by the Persian king Cyrus II, marking the beginning of the Achaemenid empire.

While it is generally accepted that the Medes played a significant role in the ancient Near East after the fall of Assyria, historians debate the existence of a Median empire or even a kingdom. Some scholars accept the existence of a powerful and organized empire that would have influenced the political structures of the later Achaemenid empire. Others argue that the Medes formed a loose confederation of tribes rather than a centralized state.

Not only during the Neo-Assyrian period of the 9th through 7th centuries BCE but also for the following Neo-Babylonian and early Persian times the sources exhibit an external view of the Medes. There is not a single Median source representing a Median perspective on their own history. The available textual sources on Media primarily consist of contemporary Assyrian and Babylonian texts, as well as the Persian inscription of Behistun, works by later Greek authors such as Herodotus and Ctesias, and some biblical texts. Before the archaeological discoveries of Assyrian and Babylonian ruins and cuneiform archives in the mid-19th century, the history of civilizations in the Near East prior to the Achaemenid Empire relied solely on classical and biblical sources. Information about the Medes, as well as about the Assyrians and Babylonians, was derived from the works of classical authors such as Herodotus and their successors. They gathered information from scholarly circles within the Achaemenid Empire, but this information was neither direct nor contemporary, nor was it based on solid archives or historical materials. Although no contemporary textual source has been discovered in Media, the information available in Assyrian and Babylonian sources is quite relevant.

Due to the absence of written records from pre-Achaemenid Media and, until recently, the lack of archaeological evidence, the 'Median logos' of the Greek historian Herodotus (1. 95–106) was for a long time the primary and generally accepted historical account of the ancient Medes. In his account in the first book of his Histories, Herodotus traces the development of a unified Median state or empire with a major capital at Ecbatana and a geographical reach as far west as the Halys river in central Turkey. Although what he describes happened centuries earlier and he probably relied on unreliable oral accounts, his description can be correlated to some degree with the Assyrian and Babylonian sources. The Greek historian Ctesias worked as a physician in the service of the Achaemenid king Artaxerxes II and wrote about Assyria, Media, and the Achaemenid Empire in his work Persica, consisting of 23 books supposedly based on Persian royal archives. Despite heavily criticizing Herodotus and accusing him of telling many lies, Ctesias follows Herodotus and also reports a long period during which the Medes ruled a vast empire. What has survived from his work is filled with romantic stories, exotic anecdotes, court gossip, and lists of questionable reliability making Ctesias one of the few ancient authors considered not very reliable. However, others have regarded him as an important source.

The Assyrian royal inscriptions, dating from Shalmaneser to Esarhaddon (circa 850-670 BCE), contain the most significant set of historical information about the Medes. The Herodotean account dealing with the period before the Median king Cyaxares has been largely dismissed in favor of contemporary Assyrian records. The Assyrian sources that provide information on the Medes never mention a unified Median state. Instead, these sources indicate a fragmented political landscape comprising small-scale entities headed by various city lords. While scholars have suggested connections between certain individuals in this milieu and the names mentioned in classical sources, all identifications based on name similarity are questionable. The Assyrian sources only offer a clear picture up to c. 650 BCE. For the subsequent period, there is a gap in quantity and quality of Assyrian sources. Historical evidence for a unified Median state comes only very late in the period, when in 615 BCE the Medes reappear in Babylonian sources led by Cyaxares. After this event, the Medes once more recede from history till 550 BCE when the Persian king Cyrus II defeats the Median king Astyages to become the paramount political figure in Iran. The history of the period c. 650–550 BCE — the apparent zenith of Median power — remains poorly understood. While Classical Greek sources claim the existence of a Median Empire during this period, tangible evidence supporting the existence of such an empire has not yet been found and contemporaneous sources from this period rarely reference the Medes.

The Median period is one of the least understood periods in Iranian archaeology, and the geography of Media remains largely obscure. Any effort to identify distinctive elements of the Median material culture from the Iron Age III (c. 800–550 BCE) in the western region of Iran primarily focuses on sites near the ancient capital of Media, Ecbatana (modern Hamadan). Furthermore, the lack of clarity in the archaeological record makes it challenging to determine whether certain archaeological materials should be attributed to the Median or Achaemenid culture. Modern archaeological activity in the central area of ancient Media was especially intense and fruitful in the 1960s and 1970s, with excavations at Godin Tepe, Tepe Nush-i Jan, and Baba Jan. Additionally, in the adjacent region of the ancient kingdom of Mannea, excavations at Hasanlu and Ziwiye also yielded productive results. The archaeological activity revealed that, during the 8th and 7th centuries BCE, Median sites experienced significant growth but were depopulated in the first half of the 6th century BCE, a period presumed to be the zenith of development for the supposed Median Empire.

The Nush-i Jan I phase, with an approximate date of 750–600 BCE, uncovered a sequence of several buildings on the site. The "Central Building" was constructed early in this phase, in the 8th century BCE, while the "Fort" and the "Western Building," the latter featuring a notable columned hall, were added to the site throughout the 7th century BCE. These public buildings were later abandoned, and in the first half of the 6th century BCE, the site was occupied by less institutionalized populations. In one of their reports, the excavators David Stronach and Michael Roaf conjectured that the collapse of Assyria and the gradual erosion of Scythian power might have influenced the abandonment of various fortresses, especially those located near the territorial core of Media. In another report, it was suggested that the various buildings were abandoned in different ways during the period when Median power was still on the rise. Godin Tepe's Level II, excavated by T. Cuyler Young and Louis Levine, contains architectural structures similar to those of Nush-i Jan I and presents a similar narrative: the progressive growth of public buildings during Phases 1 to 4, followed by a period of "peaceful abandonment" and "squatter occupation" in Phase 5. A similar story is also told by the results of excavations at Baba Jan, although the excavator supports a higher chronology with the flourishing Phase III in the 9th–8th centuries and irregular occupation in the 7th century, primarily for historical reasons (alleged Assyrian and Scythian attacks). In any case, the site appears to be completely abandoned in the first half of the 6th century BCE.