Ala-Köl (Kyrgyz: Ала-Көл,[1] also Алакөл, Russian: Ала-Куль, romanized: Ala-Kul) is a rock-dammed lake in the Terskey Alatau mountain range in the Ak-Suu District of the Issyk-Kul Region in Kyrgyzstan.

It is 2.8 km (1.7 mi) long and 600–700 m (2,000–2,300 ft) wide.

[2] A Russian traveller named Putimtsoff was the first to knowingly visit the lake in 1811.

He gave a good description of it, mentioning rocks of different colours in the lake, and the furious winds blowing around the lake.

Thirty years later Alexander von Schrenk explored the lake and its surroundings.