Kartsakhi Lake (Georgian: áÂÂáÂÂá á‡ÂÂá®áÂÂá¡ á¢áÂÂáÂÂ, karts'akhis tba), or Lake Khozapini (, khozap'inis tba; Turkish: Hazapin Gölü), or Lake Aktaà  (), is a soda lake in the Caucasus Mountains. It straddles the international border between Georgia (53%) and Turkey (47%). The village of Kartsakhi lies near the lake's northeastern shore.
It is the second largest lake in Georgia, covering an area of 26.3 or 26.6 square kilometers at an altitude of 1799 m. It is fed by a number of creeks. During the rainy season, its excess water discharges into the Kura River. The water level has fallen due to reduced precipitation.
It is an important bird habitat; it holds one of the largest populations of the Eurasian eagle-owl in the country, along with populations of the Dalmatian pelican and great white pelican.