Laceyella is a Gram-positive, thermophilic, spore-forming and aerobic bacterial genus from the family Thermoactinomycetaceae. The genus Laceyella is namened after the English microbiologist John Lacey.
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI).