Tuvana-i-Colo is a small island in the southeastern part of the island state of Fiji in the Pacific Ocean.

It has three structures visible on satellite imagery,[1] but it is unknown whether the island is inhabited.

It is located about 25 km south of Ono-i-Lau, the southernmost inhabited Fijian atoll, and 8 kilometres east-northeast of the neighboring atoll Tuvana-i-Ra.

The island was sighted in 1820 by the Russian explorer Fabian Gottlieb von Bellingshausen and named "Siminov” (after the astronomer Ivan Mikhailovich Simonov who was on expedition with him).

This article about a geographical location in Fiji is a stub.