Virachey National Park is a national park in north-eastern Cambodia. Although partly protecting flora and fauna of international conservation priority, the park is under serious threat from illegal logging in the region. The park is one of only two Cambodian ASEAN Heritage Parks and is one of the top priority areas for conservation in Southeast Asia. The park overlaps Ratanakiri and Stung Treng Provinces in northeastern Cambodia covering an area of 3,325² km.
Located in some of the most deepest and isolated jungles of Cambodia, Virachey is largely unexplored and holds a large assortment of wildlife, waterfalls and mountains. The park comprises dense semi-evergreen lowlands, montane forests, upland savannah, bamboo thickets and occasional patches of mixed deciduous forest. Most of the area lies above 400 meters up to 1,500 meters.