Nihiru, or Niukia, is one of the Tuamotu atolls in French Polynesia.

Nihiru Atoll is roughly triangular in shape.

The first recorded European to arrive to Nihiru was Russian oceanic explorer Fabian Gottlieb von Bellingshausen in 1820 on ships Vostok and Mirni.

Nihiru Atoll belongs to the commune of Makemo, which consists of the atolls of Makemo, Haraiki, Marutea Nord, Katiu, Tuanake, Hiti, Tepoto Sud, Raroia, Takume, Taenga and Nihiru.

This French Polynesia-related geography article is a stub.