Scotinomys is a genus of rodent, the singing mice, in the family Cricetidae. Together with Baiomys, it forms the tribe Baiomyini. It contains the following species: They are found in mountainous areas in Central America, at altitudes of 1000 m to at least 3500 m. As their common name indicates, they are notable for their acoustic communication. They are insectivorous. The two species show substantial divergence in behaviour and reproduction, with S. xerampelinus generally dominant over S. teguina where the species occur together.