Tana Qirqos (variantly spelled Tana Kirkos; also called Tana Chirqos or Tana Chirkos, etc.; Ge'ez: ጣና ቂርቆስ ṭānā ḳīrḳōs, ጣና ጪርቆስ ṭānā č̣īrḳōs) is an island in the eastern part of Lake Tana in Ethiopia, near the mouth of the Gumara River, having a latitude and longitude of 11°51′49″N 37°29′27″E / 11.86361°N 37.49083°ECoordinates: 11°51′49″N 37°29′27″E / 11.86361°N 37.49083°E. It is considered a holy island, and only monks of the Ethiopian Church live there.
The monks believe that the island was once the resting place of the Ark of the Covenant. According to tradition, the Ark of the Covenant was brought to Tana Kirkos from a Jewish outpost on Elephantine Island in Egypt, and was kept on the island from about 400 BC to AD 400 then later moved to Mary of Zion church in Axum.