Teuruarii IV, born Epatiana a Teuruarii (c. 1879 – 1933), was the last King of Rurutu, an island within the larger Austral Islands archipelago, who ruled from around 1886 until the annexation of the island to France in 1900. Proclaimed king upon his father's abdication while still a child, his mother ruled as regent. During this regency the Church of Moerari was consecrated and the death penalty was abolished.