Isla Ratón is a Venezuelan town, capital of the municipality amazonense de Autana. It is also a 40 km² fluvial island located in the course of the Orinoco River right next to the municipality of Puerto Carreño in the Department of Vichada in the Republic of Colombia.

With a population of 12,612 inhabitants, according to the 2011 census, it is the fourth most inhabited municipality after Atures. The town is called "Ratón del Carmen" and has a mayor's office, prefecture, rural medicine, malariology, cultural houses, plazas, courts, a church, schools, high schools, markets and shops.

Mouse Island was a community of few inhabitants, founded by Pedro Loroima and other companions in 1943. After its foundation, it grew until it formed a community that today has become a habitable, walkable town and one of the connectors with the other municipalities of the state.

It is made up of multi-ethnic peoples such as the Curripacos, Piaroa, Criollos, and Jivi, amongst others.

The Colombian Peso is widely used and Colombian products are mostly sold as well as Colombian telecommunications services.