This is a list of lists of active and extinct volcanoes sorted by country.

This is a list of active, dormant, and extinct volcanoes in New Zealand.

New Zealand also has de facto administration over Ross Dependency in Antarctica, which contains the following volcanoes:

A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot magma, ash and gases to escape from below the surface. The word volcano is derived from the name of Vulcano island off Sicily which in turn, was named after Vulcan, the Roman god of fire.

Volcanoes are generally found where tectonic plates are diverging or converging. A mid-oceanic ridge, for example the Mid-Atlantic Ridge, has examples of volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by convergent tectonic plates coming together. By contrast, volcanoes are usually not created where two tectonic plates slide past one another. Volcanoes can also form where there is stretching and thinning of the Earth's crust (called "non-hotspot intraplate volcanism"), such as in the African Rift Valley, the Wells Gray-Clearwater volcanic field and the Rio Grande Rift in North America and the European Rhine Graben with its Eifel volcanoes.

Mount Ngauruhoe is an active stratovolcano in New Zealand. It is the youngest vent in the Tongariro volcanic complex on the Central Plateau of the North Island, and first erupted about 2,500 years ago. Although seen by most as a volcano in its own right, it is technically a secondary cone of Mount Tongariro.

The volcano lies between the active volcanoes of Mount Tongariro to the north and Mount Ruapehu to the south, to the west of the Rangipo Desert 25 kilometres to the south of the southern shore of Lake Taupo.

It erupted 45 times in the 20th century, most recently in 1977. Fumaroles exist inside the inner crater and on the rim of the eastern, outer crater.

There are several possible explanations for the mountain's name. The most plausible is Nga Uru Hoe, meaning "throwing heated stones".

In the early 2000s Mount Ngauruhoe was used as a stand-in for the fictional Mount Doom in Peter Jackson's The Lord of the Rings movie trilogy, achieving worldwide exposure.

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses (commonly called the North Island and the South Island), and numerous smaller islands, most notably Stewart Island/Rakiura and the Chatham Islands. The indigenous Māori language name for New Zealand is Aotearoa, commonly translated as The Land of the Long White Cloud. The Realm of New Zealand also includes the Cook Islands and Niue (self-governing but in free association); Tokelau; and the Ross Dependency (New Zealand's territorial claim in Antarctica).

New Zealand is notable for its geographic isolation: it is situated about 2,000 km (1250 miles) southeast of Australia across the Tasman Sea, and its closest neighbours to the north are New Caledonia, Fiji and Tonga. During its long isolation New Zealand developed a distinctive fauna dominated by birds, a number of which became extinct after the arrival of humans and the mammals they introduced.