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.
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.