Daulat Beg Oldi (also Oldie, DBO) is a traditional campsite and current military base located in the midst of the Karakoram Range in northern Ladakh, India. It is on the historic trade route between Ladakh and the Tarim Basin, and is the last campsite before the Karakoram Pass. It is said to be named after Sultan Said Khan ("Daulat Beg"), who died here on his return journey from an invasion of Ladakh and Kashmir. Chip Chap River, the main headwater of the Shyok River, flows just to the south. The Line of Actual Control with Chinese-controlled Aksai Chin is five miles to the east.

An Indian border outpost was established here in the summer of 1960. An Advance Landing Ground was also constructed here, one of the world's highest airstrips. DBO now has a road link, the 235 km-long Darbuk-Shyok-DBO Road, completed by the Border Roads Organization in 2019 on a new improved alignment.