The river carried different names through the languages of the ancient Near East. Sumerian texts called it Buranun, while Akkadian used Purattu; related forms include the Hebrew Perath and the Arabic al-Furat. Euphrates is the familiar Greek-derived name. Rising in the highlands of eastern Anatolia, the river runs generally south and southeast through Syria and Iraq. Its course and the channels connected with it helped shape the lowlands where many early cities developed. The river did not begin when people first wrote its name: written records preserve only a small part of a much older natural history. What those records reveal is how communities turned a watercourse into a source of food, transport, political power and sacred meaning.

The Babylonian creation epic Enuma Elish gives the river a place in the making of the cosmos. Marduk, the champion of Babylon, defeats Tiamat, the primordial sea, and transforms her body into the ordered world. From her eyes he causes the Euphrates and Tigris to flow. This is a mythic explanation, not a geographical account of the rivers' physical origins. It presents the waters sustaining human life as part of a world established through divine conflict. The river is therefore more than a channel crossing the land: it is woven into the body of creation itself. In this tradition, even an everyday act such as drawing water takes place within a landscape shaped by the gods.

Between the Euphrates and the Tigris lay the region the Greeks called Mesopotamia, the land between rivers. Irrigation channels carried water into cultivated ground, while boats moved goods and people between settlements. Babylon stood on the Euphrates, and cities such as Sippar, Uruk and Ur belonged to landscapes connected with the river and its changing channels. The relationship was never effortless. Water had to be distributed, canals maintained and fields protected, making the river a matter of labour and administration as well as religious belief. Mesopotamian traditions associated the life-giving powers of fresh water with Enki, whose sacred city was Eridu. The practical work of managing water and the divine language used to explain it existed side by side.

For Egyptian armies, the Euphrates lay far beyond the familiar world of the Nile valley. Its generally southeastward flow also differed from the northward course of the Nile: travelling north on the Euphrates would normally mean moving upstream, not downstream. Egyptian accounts associate Thutmose I with a monument marking his northern reach. In his thirty-third regnal year, on the campaign conventionally numbered his eighth, Thutmose III crossed the Euphrates and commemorated his achievement. Royal inscriptions, together with the tomb account of his officer Amenemheb, provide evidence for these expeditions. The celebrated elephant hunt belongs to the Syrian locality of Niy during the campaign's return journey, rather than securely to forests beyond the Euphrates. These accounts proclaim royal prowess; reaching or crossing a river did not automatically establish lasting control over every territory around it.

The Euphrates also became the setting for stories about the capture of Babylon. Herodotus describes a city divided by the river and relates how Cyrus the Persian lowered its water by diverting it, allowing soldiers to enter along the exposed channel. This should be identified as Herodotus's account, written well after the conquest, rather than presented as an independently confirmed description of the engineering operation. Its narrative force comes from a reversal: the water that supported and protected a great city becomes the route by which an enemy enters it. Babylon's river could be remembered as a lifeline and as a weakness, depending on the story being told.

Later empires continued to measure their reach against the river, although it was not an unchanging border throughout antiquity. Roman campaigns crossed it into territories contested with Parthian and, later, Sasanian rulers. Crassus's disastrous expedition in 53 BCE ended in defeat at Carrhae after his army had crossed into Mesopotamia; the battle was not an army being swallowed by the Euphrates itself. Under different rulers, boundaries and military positions advanced or retreated. The river remained a recognisable line in accounts of these struggles, but its role depended on the political circumstances of each period. A frontier on a map could also be a crossing place, a supply route and a corridor of exchange.

Biblical writings gave the Euphrates further meanings. Genesis names it as the fourth river of Eden, alongside the Tigris and two other rivers. Genesis also uses the great river as one boundary in the promise made to Abraham. In Revelation, angels are associated with the Euphrates, and its drying prepares a way for kings from the east. These passages belong to their own religious and literary settings, rather than forming a single historical account with the Babylonian creation story. Across those different traditions, the same river could mark beginnings, promised territory or an imagined end of the world. Its enduring importance lies in this meeting of physical geography and the meanings people placed upon it.