Mangatoki is a locality in southern Taranaki, in New Zealand's North Island.

Eltham is to the east, Kaponga to the west and Matapu to the south.

The Mangatoki Stream runs from Mount Taranaki through the area and into the Waingongoro River.

[1][2] Mangatoki is part of the Kaponga-Mangatoki statistical area.

Te Kura o Nga Ruahine Rangi is a coeducational composite (years 1–15) school with a roll of 76 students as of November 2024.