Pico da Neblina (Portuguese pronunciation: [ˈpiku dɐ neˈblĩnɐ], Fog Peak) is the highest mountain in Brazil, 2,994 metres (9,823 ft) above sea level, in the Serra do Imeri, a section of the Guiana Highlands on the Brazil–Venezuela border. As determined by a border survey expedition in 1962, its summit lies just within Brazilian territory, at a horizontal distance of only 687 m (2,254 ft) from the Venezuelan border at Pico 31 de Março.

As the peak's name suggests, it is shrouded in dense clouds most of the time.^{[citation needed]} It was first ascended in 1965 by members of a Brazilian Army expedition.

Officially, Pico da Neblina is located in the municipality of Santa Isabel do Rio Negro, state of Amazonas. However, this is of next to no practical significance, since the mountain is inaccessible from the urban seat of the municipality, about 180 km (112 mi) away, and federal authority over the national park, the Yanomami reservation and the border security area supersedes municipal authority in all practical respects. The nearest city is actually São Gabriel da Cachoeira, about 140 km (87 mi) in a straight line, from where virtually all climbing expeditions depart.