• Nephtys Cuvier, 1817
• Nephtys (Aglaophamus)
• Nephtys (Aglaophamus) erectanoides (Hartmann-Schröder, 1965) accepted as Aglaophamus erectanoides Hartmann-Schröder, 1965
• Nephtys (Aglaophamus) foliosus (Hartman, 1967) accepted as Aglaophamus foliosus Hartman, 1967
• Nephtys (Aglaophamus) heteroserrata (Hartmann-Schröder, 1965) accepted as Aglaophamus heteroserrata Hartmann-Schröder, 1965
• Nephtys (Aglaophamus) inermis Ehlers, 1887 accepted as Inermonephtys inermis (Ehlers, 1887)
• Nephtys (Aglaophamus) lutrea Baird, 1873 accepted as Aglaophamus lutreus (Baird, 1871)
• Nephtys (Aglaophamus) macroura Schmarda, 1861 accepted as Aglaophamus macroura (Schmarda, 1861)
• Nephtys (Aglaophamus) munamaorii Gibbs, 1971 accepted as Aglaophamus munamaorii (Gibbs, 1971)
• Nephtys (Aglaophamus) ornatus (Hartman, 1967) accepted as Aglaophamus trissophyllus (Grube, 1877)
• Nephtys (Aglaophamus) peruana Hartman, 1940 accepted as Aglaophamus peruana (Hartman, 1940)
• Nephtys (Aglaophamus) polyphara Schmarda, 1861 accepted as Aglaophamus polyphara (Schmarda, 1861)
• Nephtys (Aglaophamus) posterobranchus (Hartman, 1967) accepted as Aglaophamus posterobranchus Hartman, 1967
• Nephtys (Aglaophamus) virginis Kinberg, 1865 accepted as Aglaophamus virginis (Kinberg, 1866)
• Nephtys abranchiata Ehlers, 1913 accepted as Micronephthys abranchiata (Ehlers, 1913)
• Nephtys acrochaeta Hartman, 1950
• Nephtys assignis Hartman, 1950
• Nephtys assimilis Örsted, 1843
• Nephtys australiensis Fauchald, 1965 accepted as Aglaophamus australiensis (Fauchald, 1965)
• Nephtys bangladeshi Hossain & Hutchings, 2016
• Nephtys bilobatus Kudenov, 1975
• Nephtys bononensis Quatrefages, 1850 accepted as Nephtys caeca (Fabricius, 1780)
• Nephtys borealis Örsted, 1843 accepted as Nephtys ciliata (Müller, 1788)
• Nephtys brachycephala Moore, 1903
• Nephtys brevibranchis Hartmann-Schröder, 1959
• Nephtys bruuni Kirkegaard, 1995
• Nephtys bucera Ehlers, 1868
• Nephtys caeca (Fabricius, 1780)
• Nephtys caeca var. ciliata McIntosh, 1908 accepted as Nephtys caeca (Fabricius, 1780)
• Nephtys caecoides Hartman, 1938
• Nephtys californiensis Hartman, 1938
• Nephtys capensis Day, 1953
• Nephtys chemulpoensis Jung & Hong, 1997
• Nephtys ciliata (Müller, 1788)
• Nephtys cirrosa Ehlers, 1868
• Nephtys cirrosa longicornis Perejaslavtseva, 1891 accepted as Micronephthys longicornis (Perejaslavtseva, 1891)
• Nephtys cornuta Berkeley & Berkeley, 1945 accepted as Micronephthys cornuta (Berkeley & Berkeley, 1945)
• Nephtys cornuta franciscana Clark & Jones, 1955 accepted as Bipalponephtys cornuta (Berkeley & Berkeley, 1945) accepted as Micronephthys cornuta (Berkeley & Berkeley, 1945)
• Nephtys cryptomma Harper, 1986
• Nephtys cuvieri Quatrefages, 1866
• Nephtys danida Nateewathana & Hylleberg, 1986 accepted as Micronephthys danida (Nateewathana & Hylleberg, 1986)
• Nephtys dibranchis Grube, 1877 accepted as Aglaophamus dibranchis (Grube, 1877)
• Nephtys discors Ehlers, 1868
• Nephtys dussumieri Quatrefages, 1866
• Nephtys ectopa Chamberlin, 1919
• Nephtys elamellata Eliason, 1951 accepted as Aglaophamus elamellatus (Eliason, 1951)
• Nephtys ferruginea Hartman, 1940
• Nephtys fluviatilis Monro, 1937
• Nephtys furcifera Hartmann-Schröder, 1959
• Nephtys glabra Hartman, 1950
• Nephtys glossophylla Schmarda, 1861
• Nephtys gravieri Augener, 1913
• Nephtys hombergii Savigny in Lamarck, 1818
• Nephtys hombergii kersivalensis McIntosh, 1908 accepted as Nephtys kersivalensis McIntosh, 1908
• Nephtys hudsonica Chamberlin, 1920
• Nephtys hystricis McIntosh, 1900
• Nephtys imbricata Grube, 1857
• Nephtys impressa Baird, 1871
• Nephtys incisa Malmgren, 1865
• Nephtys incisa bilobata Heinen, 1911
• Nephtys inermis Ehlers, 1887 accepted as Inermonephtys inermis (Ehlers, 1887)
• Nephtys inornata Rainer & Hutchings, 1977
• Nephtys kersivalensis McIntosh, 1908
• Nephtys longipes Stimpson, 1856
• Nephtys longosetosa Örsted, 1842
• Nephtys lyrochaeta Fauvel, 1902 accepted as Aglaophamus lyrochaeta (Fauvel, 1902)
• Nephtys magellanica Augener, 1912
• Nephtys malmgreni Théel, 1879 accepted as Aglaophamus malmgreni (Théel, 1879)
• Nephtys mesobranchia Rainer & Hutchings, 1977
• Nephtys minuta (Théel, 1879) accepted as Micronephthys minuta (Théel, 1879)
• Nephtys mirocirris Fauchald, 1965 accepted as Nephtys gravieri Augener, 1913
• Nephtys monilibranchiata Rozbaczylo & Castilla, 1974
• Nephtys monroi Hartman, 1950
• Nephtys multicirrata Hartmann-Schröder, 1960
• Nephtys neopolybranchia Imajima & Takeda, 1987
• Nephtys neotena (Noyes, 1980) accepted as Micronephthys neotena (Noyes, 1980)
• Nephtys oculata Hartmann-Schröder, 1959
• Nephtys oligobranchia Southern, 1921 accepted as Micronephthys oligobranchia (Southern, 1921)
• Nephtys palatii Gravier, 1904 accepted as Micronephthys palatii (Gravier, 1904)
• Nephtys panamensis Monro, 1928
• Nephtys paradoxa Malm, 1874
• Nephtys parva Clark & Jones, 1955 accepted as Micronephthys cornuta (Berkeley & Berkeley, 1945)
• Nephtys pente Rainer, 1984
• Nephtys phasuki Nateewathana & Hylleberg, 1986
• Nephtys phyllocirra Ehlers, 1887
• Nephtys picta Ehlers, 1868
• Nephtys polybranchia Southern, 1921
• Nephtys pulchra Rainer, 1991 accepted as Aglaophamus pulcher (Rainer, 1991)
• Nephtys punctata Hartman, 1938
• Nephtys quatrefagesi (Kinberg, 1866)
• Nephtys rickettsi Hartman, 1938
• Nephtys rubella Michaelsen, 1897 accepted as Aglaophamus agilis (Langerhans, 1880)
• Nephtys sachalinensis Alalykina & Dnestrovskaya, 2015
• Nephtys schmitti Hartman, 1938
• Nephtys semiverrucosa Rainer & Hutchings, 1977
• Nephtys serrata Imajima & Takeda, 1987
• Nephtys serratifolia Ehlers, 1897 accepted as Nephtys imbricata Grube, 1857
• Nephtys serratus Hartman, 1953 accepted as Nephtys imbricata Grube, 1857
• Nephtys signifera Hilbig, 1992 accepted as Nephtys ferruginea Hartman, 1940
• Nephtys simoni Perkins, 1980