Colchis is a historical region.
In Greco-Roman geography, Colchis (; Kolkheti; Greek Kolkhis, presumably from Kartvelian ḳolkheti or ḳolkha) was the name for a region in the Southern Caucasus. Colchis was located on the eastern coast of the Black Sea, centered on present-day western Georgia. Around the 1st centuries BC and AD the land south of the Greater Caucasus and north of the Lesser Caucasus was divided between Kolchis in the west, Caucasian Iberia in the center and Caucasian Albania in the east. To the southwest was Armenia and to the southeast Atropatene.
The Colchians were the population native to Colchis. They are assumed to have been early Kartvelian-speaking tribes, ancestral to the contemporary groups of Svans, Mingrelians and Lazs. Ancestors of the Colchians were probably established on the Black Sea coast from as early as the Middle Bronze Age.
For centuries, until its annexation by Pontus in 164 BC, Colchis was an independent kingdom. This kingdom has been described in modern scholarship as "the earliest Georgian (political) formation". Colchis (also known in late Antiquity as Lazica, or Egrisi) would later contribute significantly to the development of medieval Georgian statehood, alongside Iberia.