Sumayar (Urdu: سمائر; Burushaski: سمئر) is a small valley situated within the Nagar District of Gilgit-Baltistan, Pakistan.

The valley is composed of nine small villages: Khai, Futhkhai, Yal, Boshat, Rashfari, Resman, Daltho, Thopkhan, and Jotorkhan.

Sumayar Valley boasts numerous tourist attractions, including snowy mountains such as Dumani on the northeast side of Diran, Silkiyang Peak, Silkiyang Glacier, Altusill and Menamgusham meadows, Baraimochay Farimuch, Hayano camping sites, Mamubar stream, and the gemstone mining area known as Chumar Bakur.

[citation needed] The famous aquamarine mining area Chumar Bakhoor is also situated in the Sumayar Valley.

It is surrounded by Nagarkhas from the east, Askurdas from the west, Ganesh from the north, and mountain ridges including Diran from the south.

The valley exhibits an elevation of 2,000 m (6,600 ft) at its northern entrance and rises to over 7,000 m as one moves towards the south, covering a distance of approximately 15 km (9.3 mi).

Walking from central Sumayar, it takes around 4 to 5 hours to reach the pegmatites that crop out on the western side of the mountain above 4000 meters elevation.