Yongdinglu Subdistrict () is a subdistrict situated on the south side of Haidian District, Beijing, China. It borders Tiancunlu Subdistrict in the north, Wanshoulu Subdistrict in the east and south, and Laoshan Subdistrict to the west. As of 2020, it had 90,879 people residing within it.
The subdistrict was created in June 1979, and its name came from Yongding () Road that runs through it.
As of 2021, Yongdinglu Subdistrict consisted of 25 communities: