Egrisi (or Kolkheti) was a kingdom in the western part of Georgia, which flourished between the 6th century BC and the 7th century AD. It was covered the territory of the former kingdom Kolkha (Colchis) and the territory of modern Abkhazia).

At some point in the early 4th century AD, the Christian Eparchy or bishopric of Pitiunt (Bichvinta in Georgian) was established in this kingdom. In 325 among the participants of the First Council of Nicaea was the Bishop of Pitiunt, Stratophilus. The Bichvinta Cathedral (5th century) is one of oldest monuments of the Georgian Christian architecture. The first Christian king of Egrisi was Gubaz I; in the 5th century, Christianity was made the official religion of Egrisi.