Nycticeinops is a genus of vesper bat in the family Vespertilionidae. It contains the following species:Bellier's serotine, Nycticeinops bellieri Broad-headed serotine, Nycticeinops crassulus Eisentraut's serotine, Nycticeinops eisentrauti Grandidier's serotine, Nycticeinops grandidieri Happolds's serotine, Nycticeinops happoldorum Large-headed serotine, Nycticeinops macrocephalus Schlieffen's serotine, Nycticeinops schlieffeni