卡腊博加兹哥耳湾（土库曼斯坦语：Garabogazköl Aylagy或Kara Boğaz Göl，意思是「大潟湖」），是全世界最大湖泊里海的一个海湾，位于里海的东岸、土库曼斯坦斯坦的西北部。面积18,000平方公里。

海湾的含盐量高达35%，不适合生物生存。由于自1929年起里海水位下降，苏联政府认为与海湾夺去里海的水有关，于是在1977年决定兴建堤坝，把海湾和里海隔开。工程在1980年竣工。但湖水蒸发比预期速度快得多。1980年湖面面积为5,031平方公里，平均水深1.22公尺，至1983年面积仅为372平方公里，平均水深0.16公尺。1984年更完全干涸。

The Garabogazköl Aylagy, alternatively the Kara-Bogaz-Gol (Turkmen:black (or mighty) strait lake) is a shallow inundated depression in the northwestern corner of Turkmenistan. It forms a lagoon of the Caspian Sea with a surface area of about 18,000 km (6,900 sq mi). It is separated from the Caspian Sea proper, which lies immediately to the west, by a narrow, rocky ridge having a very narrow opening in the rock through which the Caspian waters flow, cascading down into Garabogazköl (whence the name of the bay – "Mighty Strait Lake" in the Turkmen language – comes). The water volume of the bay fluctuates seasonally with the Caspian Sea; at times it becomes a large bay of the Caspian Sea, while at other times its water level drops drastically.