Río Grande is a city in Argentina, on the north coast of the eastern part of the Isla Grande de Tierra del Fuego. It has a population of 98,017, and is the industrial capital of the Tierra del Fuego Province. It is located 212 kilometres (132 mi) north-east of Ushuaia, the capital of the province.

Isla Grande de Tierra del Fuego also formerly Isla de Xátiva is an island near the southern tip of South America from which it is separated by the Strait of Magellan. The western portion (61.4%) of the island is in Chile, while the eastern portion is in Argentina. It forms the major landmass in an extended group of islands or archipelago also known as Tierra del Fuego.