• Achaeus Leach, 1817
• Achaeus affinis Miers, 1884 accepted as Achaeus brevirostris (Haswell, 1879)
• Achaeus akanensis Sakai, 1938
• Achaeus anauchen Buitendijk, 1939
• Achaeus barnardi Griffin, 1968
• Achaeus boninensis Miyake & Takeda, 1969
• Achaeus breviceps Haswell, 1880 accepted as Achaeus lacertosus Stimpson, 1857
• Achaeus brevidactylus Sakai, 1938
• Achaeus brevifalcatus Rathbun, 1911
• Achaeus brevirostris (Haswell, 1879)
• Achaeus brevis (Ortmann, 1894)
• Achaeus buderes Manning & Holthuis, 1981
• Achaeus cadelli Alcock, 1895
• Achaeus calypso Forest & Guinot, 1966 accepted as Calypsachaeus calypso (Forest & Guinot, 1966)
• Achaeus cranchii Leach, 1817
• Achaeus cursor A. Milne-Edwards & Bouvier, 1898 accepted as Achaeus cranchii Leach, 1817
• Achaeus curvirostris (A. Milne-Edwards, 1873)
• Achaeus dubia Laurie, 1906
• Achaeus elongatus Sakai, 1938 accepted as Achaeus curvirostris (A. Milne-Edwards, 1873)
• Achaeus erythraeus Balss, 1929
• Achaeus fissifrons (Haswell, 1879) accepted as Achaeus curvirostris (A. Milne-Edwards, 1873)
• Achaeus foresti Monod, 1956
• Achaeus galatheae Griffin, 1970 accepted as Prosphorachaeus galatheae (Griffin, 1970)
• Achaeus gordonae Forest & Zariquiey Álvarez, 1955 accepted as Achaeus gracilis (O.G. Costa, 1839)
• Achaeus gracilis (O.G. Costa, 1839)
• Achaeus hyalinus Alcock & Anderson, 1894 accepted as Grypachaeus hyalinus (Alcock & Anderson, 1894)
• Achaeus indicus (Alcock, 1895) accepted as Sunipea indicus (Alcock, 1895)
• Achaeus inimicus Rathbun, 1911
• Achaeus japonicus (De Haan, 1839)
• Achaeus kermadecensis Webber & Takeda, 2005
• Achaeus lacertosus Stimpson, 1857
• Achaeus laevioculis Miers, 1884
• Achaeus longipes Capart, 1951 accepted as Capartiella longipes (Capart, 1951)
• Achaeus lorina (Adams & White, 1848)
• Achaeus magnus Müller, 1979 †
• Achaeus monodi (Capart, 1951)
• Achaeus paradicei Griffin, 1970
• Achaeus parvulus De Angeli & Caporiondo, 2010 †
• Achaeus pholcus Ng, Richer de Forges & Lee, 2023
• Achaeus podocheloides Griffin, 1970
• Achaeus powelli Manning, 1982
• Achaeus pugnax (De Man, 1928)
• Achaeus robustus Yokoya, 1933
• Achaeus serenei Griffin & Tranter, 1986
• Achaeus spinifrons Sakai, 1938 accepted as Achaeus lacertosus Stimpson, 1857
• Achaeus spinosissimus Griffin, 1968
• Achaeus spinossisimus Griffin, 1968 accepted as Achaeus spinosissimus Griffin, 1968
• Achaeus spinosus Miers, 1879
• Achaeus stenorhynchus Rathbun, 1932 accepted as Achaeus pugnax (De Man, 1928)
• Achaeus superciliaris (Ortmann, 1893)
• Achaeus tenuicollis Miers, 1886 accepted as Achaeus curvirostris (A. Milne-Edwards, 1873)
• Achaeus trifalcatus Forest & Guinot, 1966
• Achaeus trituberculatus Rathbun, 1894
• Achaeus tuberculatus Miers, 1879
• Achaeus turbator Manning & Holthuis, 1981
• Achaeus umu Ng & Boyko, 2016
• Achaeus varians Takeda & Miyake, 1969
• Achaeus villosus Rathbun, 1916
• Inachus (Achaeus) Leach, 1817 accepted as Achaeus Leach, 1817
• Inachus (Achaeus) japonicus De Haan, 1839 accepted as Achaeus japonicus (De Haan, 1839)