Engilchek Glacier (Kyrgyz: Эңилчек, Russian: Энильчек - Enilchek, also Иныльчек - Inylchek) is a glacier in the Central Tian Shan Mountains of Issyk-Kul Region, northeastern Kyrgyzstan.

[1] with an area of 17.2 square kilometres (7 sq mi) and an ice thickness of roughly 150–200 m in the bottom parts.

[2] The glacier stems from the Chinese-Kazakh-Kyrgyz massif of Khan Tengri and Pik Pobedy and the upper part of the glacier falls in all three countries.

[3] Meltwater from the glacier feeds the Engilchek River, a tributary of the Saryjaz (known as Aksu in China), which crosses the Chinese border into the Tarim Basin.

Water from this glacier also feeds the seasonal glacial Lake Merzbacher which causes frequent glacial lake outburst floods in the Engilchek River valley.