Tepidibacter is a genus of Gram-positive bacteria in the family Clostridiaceae.
The type species of this genus is Tepidibacter thalassicus, a moderately thermophilic bacterial species isolated from deep-sea hydrothermal vents. Additional species within this genus have been identified.
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI)