The southern red bat (Lasiurus blossevillii) is a species of microbat found in South America.
Previously, the western red bat (L. frantzii) was classified as a subspecies of the southern red bat, but phylogenetic evidence supports it being a distinct species. This has been followed by the American Society of Mammalogists and the ITIS.
It was named after French explorer Jules de Blosseville.
The species is recorded in Argentina, Bolivia, Brazil, Colombia, Ecuador (Galápagos Islands), French Guiana, Guyana, Paraguay, Peru, Suriname, Trinidad and Tobago, Uruguay and Venezuela.