Sheosar Lake (Urdu: شیوسر جھیل) is an alpine lake situated at the western end of Deosai National Park, Gilgit-Baltistan, Pakistan.

From the main Astore town, it takes about four hours' jeep travel through a semi-metal road to reach Chilum, the last residential area adjacent to the plains.

During a clear sunny day, Nanga Parbat peak can be seen from the location of the lake.

During spring, the surrounding area is covered with a wide variety of flowers and butterflies.

[citation needed] Most visitors come to the lake in the summer, between June and early September.