Cidreira is a municipality in the state of Rio Grande do Sul, Brazil.

[2] It is located at a latitude of 30º09'39" South and a longitude of 50º14'02" West, at an altitude of 60 meters above sea level.

Its estimated population for 2006 was 11,767 inhabitants.

It occupies an area of 246,362 km².

This geographical article relating to Rio Grande do Sul is a stub.