Dayu Subdistrict (Chinese: 大峪街道; pinyin: Dàyù Jiēdào) is a subdistrict within Mentougou District, Beijing, China.

It shares border with Chengzi Subdistrict and Longquan Town in the north, Guangning Subdistrict in the east, Yongding and Longquan Towns in the south, and Dongxinfang Subdistrict in the west.

[1] The name Dayu (Chinese: 大峪; lit.

'Big Ravine') was inherited from a village that used to exist in the region.

[2] In the year 2021, Dayu Subdistrict consisted of 33 communities:[3]