Nanda Devi National Park, National park in Uttarakhand, India.

Nanda Devi National Park surrounds Nanda Devi (7,816 m) in the Chamoli Garhwal district of Uttarakhand, India. Its roughly square sanctuary wall of high ridges encloses an inner basin holding the Uttari and Dakshini Rishi glaciers, drained westward by the Rishi Ganga through a steep gorge. The park lies entirely above 3,500 m.

The inner basin remained unreachable until 1934, when mountaineers Eric Shipton and H.W. Tilman first pushed through the Rishi Ganga gorge. In 1988 the area was inscribed as a World Heritage Site after the earlier protected status had been expanded.

The park takes its name from Nanda Devi, a goddess in local Kumaoni and Garhwali tradition, and the whole sanctuary is treated as her dwelling. The ring of peaks is called the sanctuary wall, and the Rishi Ganga gorge is the only way in. Visitors notice the peak itself, a two-summit massif of snow and dark rock, from the outer valleys.

Visitors need special permits that require several weeks of advance notice and may enter only with authorized guides. The trekking season runs from May through October, when early snow and late monsoon rains make passages unsafe.

In 1965 a joint CIA-Indian Intelligence Bureau team carried a plutonium-powered listening device toward the Nanda Devi summit to intercept Chinese missile telemetry. They cached it on the mountain when weather closed in; the next season's expedition found the anchor empty. The device was never recovered, and in 2018 Uttarakhand tourism minister Satpal Maharaj raised concerns that it might be contaminating Ganges waters.