• Dimya A. Rouault, 1850
• Dimya (Dimyodon) Munier-Chalmas, 1886 † accepted as Atreta Etallon, 1862 †
• Dimya (Dimyodon) schlumbergeri Munier-Chalmas, 1886 † accepted as Atreta schlumbergeri (Munier-Chalmas, 1886) †
• Dimya acuminata Esteves, 1984 accepted as Dimya fimbricostata H. E. Vokes, 1979
• Dimya akasakiensis Tashiro & Otsuka, 1980 †
• Dimya alleni H. E. Vokes, 1979 †
• Dimya argentata Habe, 1951 accepted as Dimya filipina Bartsch, 1913 accepted as Neoatreta filipina (Bartsch, 1913)
• Dimya argentea Dall, 1886
• Dimya bonneti Cossmann, 1902 †
• Dimya californiana S. S. Berry, 1936
• Dimya coralliotis S. S. Berry, 1944 accepted as Dimya californiana S. S. Berry, 1936
• Dimya corrugata Hedley, 1902
• Dimya crearoi Oppenheim, 1900 †
• Dimya deshayesiana A. Rouault, 1850 †
• Dimya dissimilis Tate, 1886 † accepted as Neoatreta dissimilis (Tate, 1886) †
• Dimya extenuiplicata Sacco, 1897 † accepted as Dimya tenuiplicata (G. Seguenza, 1879) †
• Dimya filipina Bartsch, 1913 accepted as Neoatreta filipina (Bartsch, 1913)
• Dimya fimbricostata H. E. Vokes, 1979
• Dimya fragilis Koenen, 1893 †
• Dimya fragilis crassiplicata Sacco, 1897 † accepted as Dimya tenuiplicata (G. Seguenza, 1879) †
• Dimya fragilis miopliocenica Sacco, 1897 † accepted as Dimya tenuiplicata (G. Seguenza, 1879) †
• Dimya grandis Dall, 1896 †
• Dimya grandis divaricata Dall, 1896 † accepted as Dimya grandis Dall, 1896 †
• Dimya grandis var. divaricata Dall, 1896 † accepted as Dimya grandis Dall, 1896 †
• Dimya hohndorfi Welle, 1998 †
• Dimya japonica Habe, 1971
• Dimya kaiparaensis Laws, 1944 † accepted as Neoatreta kaiparaensis (Laws, 1944) †
• Dimya lima Bartsch, 1913
• Dimya lima Bartsch, 1913 sensu Habe, 1958 accepted as Dimya japonica Habe, 1971
• Dimya maoria A. W. B. Powell, 1937
• Dimya mimula Dall, Bartsch & Rehder, 1938
• Dimya molokaia Dall, Bartsch & Rehder, 1938 accepted as Dimyella molokaia (Dall, Bartsch & Rehder, 1938)
• Dimya pamplonensis (Carez, 1881) †
• Dimya plana (K. Martin, 1885) † accepted as Neoatreta plana (K. Martin, 1885) †
• Dimya radiata Kuroda, 1928 accepted as Neoatreta filipina (Bartsch, 1913)
• Dimya radiata takii Kuroda, 1932 accepted as Neoatreta filipina (Bartsch, 1913)
• Dimya rahkiensis Eames, 1951 †
• Dimya raulini Cossmann & Peyrot, 1914 †
• Dimya richei Doncieux, 1911 † accepted as Dimya pamplonensis (Carez, 1881) †
• Dimya rufaripa H. E. Vokes, 1979 †
• Dimya sigillata Tate, 1886 †
• Dimya spondyliformis Eames, 1951 †
• Dimya tenuiplicata (G. Seguenza, 1879) †
• Dimya tigrina Bayer, 1971
• Dimya westonensis P. A. Maxwell, 1978 †
• Dimyactis Pax, 1922 (unaccepted)
• Dimyactis duplicata Pax, 1922 accepted as Halianthella kerguelensis (Studer, 1879)
• Dimyarina Iredale, 1936 accepted as Dimya A. Rouault, 1850
• Dimyarina maoria (A. W. B. Powell, 1937) accepted as Dimya maoria A. W. B. Powell, 1937