The name
Taranaki is from the
Māori language. The mountain was named after Rua Taranaki, the first ancestor of the
iwi (tribe) called
Taranaki, one of several iwi in the region. The Māori word
tara means mountain peak, and
naki may come from
ngaki, meaning "clear of vegetation." It was also named ("ice mountain") and ("hill of Naki") by iwi who lived in the region in "ancient times".
Captain Cook named it Mount Egmont on 11 January 1770 after
John Perceval, 2nd Earl of Egmont, a former
First Lord of the Admiralty who had supported the concept of an oceanic search for
Terra Australis Incognita. Cook described it as "of a prodigious height and its top cover'd with everlasting snow," surrounded by a "flat country ... which afforded a very good aspect, being clothed with wood and
verdure". When the French explorer
Marc-Joseph Marion du Fresne saw the mountain on 25 March 1772 he named it . He was unaware of Cook's earlier visit. It appeared as Mount Egmont on maps until 29 May 1986, when the name officially became "Mount Taranaki or Mount Egmont" following a decision by
the Minister of Lands,
Koro Wētere. The Egmont name no longer applies to the national park that surrounds the peak, but some geologists still refer to the peak as the Egmont Volcano. As part of the
Treaty of Waitangi settlement with Ngā Iwi o Taranaki, a group of tribes in the region, the mountain was officially renamed
Taranaki Maunga. The settlement was initialled on 31 March 2023, The official name changed to
Taranaki Maunga on 1 April 2025. Some iwi in the region had referred to the mountain as
Taranaki Mounga rather than
Taranaki Maunga, per the local Māori dialect. == Geology ==