Machadinho d'Oeste is a municipality located in the Brazilian state of Rondônia.

[2] The municipality contains part of the 346,861 hectares (857,110 acres) Jaru Biological Reserve, a fully protected conservation unit created in 1984.

[3] It also contains 13% of the Campos Amazônicos National Park, a 961,318 hectares (2,375,470 acres) protected area created in 2006 that protects an unusual enclave of cerrado vegetation in the Amazon rainforest.

[5][6] It also contains the Castanheira, Freijó, Garrote, Itaúba, Jatobá, Maracatiara, Massaranduba, Mogno, Piquiá, Roxinho and Sucupira extractive reserves.

[7][8][9][10][11][12][13][14][15][16][17] This Rondônia, Brazil location article is a stub.