Monuriki is a small, uninhabited island situated off the coast of Viti Levu in the Fiji Islands, in Melanesia in the South Pacific Ocean. Monuriki is part of the Atolls islands, and related to a group of three islets in the larger group of islands known as the Mamanuca Islands. This coral and volcanic island is the smallest islet and the southernmost of a small group of three islets, west of Tavua.
Monuriki is of volcanic origin, with a length of 1.15 kilometres (0.71 mi) and a width of 600 metres (660 yd). The land area is approximately 0.4 square kilometres (100 acres) surrounded on all sides by coral reef. The highest point is 178 metres (584 ft). The terrain includes volcanic rocks, lagoons, palm trees, a pine forest, and several small white sand beaches.