Nectomys rattus
 Nectomys rattus also known as the Amazonian Nectomys is a species of rodent in the genus Nectomys of family Cricetidae. It is found in Brazil Colombia French Guiana Guyana Suriname and Venezuela where it lives in a variety of habitats including lowland tropical rainforest cerrado and caatinga. It was recognized as distinct only in 2000 and its limits with other Nectomys including Nectomys apicalis and Nectomys squamipes remain unclear.