Henry Strachey (1816 – 1912) was an army officer remembered for his forays into western Tibet during the late 1840s.
Strachey first visited Tibet in 1846, when he surveyed the regions surrounding Lakes Manasarovar and Rakshastal. His second occurred in 1849, when he and his brother Richard briefly entered Tibet by following the Niti Pass out of Garhwal, a region in the northern Indian state Uttarakhand.
Although both these visits were unauthorised, Strachey's reports on these areas won him the Royal Geographical Society's Patron's Medal in 1852. Between them he served as member of the 1847-1848 Ladakh-Tibet boundary commission.