Имере́тия (Имере́ти, груз. იმერეთი) — регион (край, мхаре) и историческая область в Западной Грузии, в бассейне среднего течения реки Риони и её притоков. Жители области (имеретины) говорят на имеретинском диалекте грузинского языка, в прошлом отличались некоторыми локальными особенностями культуры и быта. Центр региона — Кутаиси. Часть территории края контролируется частично признанной Республикой Южная Осетия. Недалеко от городка Цхалтубо и примерно в 10 километрах от Кутаиси находится самая крупная пещера в Грузии — пещера Кумистави, переименованная в 2010 году в пещеру Прометея. (also Račha, Georgian: რაჭა, Račʼa) is a highland area in western Грузия, located in the upper Rioni river valley and hemmed in by the Greater Caucasus mountains. Under Georgia’s current subdivision, Racha is included in the Racha-Lechkhumi and Kvemo Svaneti region (mkhare) as the municipalities of Oni and Ambrolauri.
Racha occupies 2,854 km2 in the north-eastern corner of western Georgia. Spurs of the Greater Caucasus crest separates Racha from the Georgian historical regions of Сванети and Lechkhumi on the north-west and from Imereti on the south, while the main Caucasus ridge forms a boundary with Russia’s North Ossetia. On the east, Racha is bordered by breakaway South Ossetia, officially part of Georgia’s Shida Kartli region.
Racha had been part of Colchis and Caucasian Iberia since ancient times and its main town Oni was said to have been founded by King Parnajom of Iberia in the 2nd century BC. Upon creation of the unified Georgian kingdom in the 11th century, Racha became one of the duchies (saeristavo) within it. Rati of the Baghvashi family was the first duke (eristavi) appointed by King Bagrat III. Descendants of Rati and his son Kakhaber, eponymous father of Racha’s ruling dynasty of Kakhaberisdze, governed the province until 1278. In 1278 King David VI Narin abolished the duchy during his war against the Mongols. In the mid-14th century, the duchy was restored under the rule of the Charelidze family.
The next dynasty of Chkhetidze governed Racha from 1465 to 1769. Vassals of the King of Imereti, they revolted several times against the royal power. The 1678–1679 civil war resulted in the most serious consequences. In this war, Duke Shoshita II of Racha (1661–1684) supported Prince Archil, a rival of the pro-Ottoman Imeretian king Bagrat IV. On the defeat of Archil, Racha was overrun and plundered by an Ottoman punitive force. Under Rostom (1749–1769), the duchy became virtually independent from Imereti. However, towards the end of 1769, King Solomon I of Imereti managed to arrest Rostom and to abolish the duchy. In 1784, King David II of Imereti revived the duchy and gave it to his nephew Anton. Local opposition attempted to use an Ottoman force to take control of Racha, but the victory of King David at Skhvava (January 26, 1786) temporarily secured his dominance in the area. In 1789, the next Imeretian king Solomon II finally abolished the duchy and subordinated the province directly to the royal administration.