• Discus Albers, 1850 (uncertain) [Family: Mollusca (awaiting allocation), Order: Mollusca (awaiting allocation)]
• Discus Campbell, 1879 accepted as Diretmus Johnson, 1864 [Family: Diretmidae, Order: Beryciformes]
• Discus Fitzinger, 1833 [Family: Discidae, Order: Stylommatophora]
• Discus Haldeman, 1840 (uncertain) [Family: Planorbidae, Order: Hygrophila]
• Discus Hong, 1982 † (uncertain) [Family: Coleoptera (awaiting allocation), Order: Coleoptera]
• Discus King, 1844 (uncertain) [Family: Cephalopoda (awaiting allocation), Order: Cephalopoda (awaiting allocation)]
• Discus Lesson, 1837 (uncertain) [Family: Cnidaria (awaiting allocation), Order: Cnidaria (awaiting allocation)]
• Discus Sandberger, 1875 (uncertain) [Family: Mollusca (awaiting allocation), Order: Mollusca (awaiting allocation)]
• Discus Stodder, 1879 [Family: , Order: Bacillariophyta (awaiting allocation)]
• Discus aureus Campbell, 1879 accepted as Diretmus argenteus Johnson, 1864
• Discus brunsoni S.S. Berry, 1955
• Discus bryanti (Harper, 1881)
• Discus catskillensis (Pilsbry, 1896)
• Discus clappi (Pilsbry, 1924)
• Discus cronkhitei (Newcomb, 1865) accepted as Discus whitneyi (Newcomb, 1864)
• Discus macclintocki (F.C. Baker, 1928)
• Discus marmorensis H.B. Baker, 1932
• Discus nigrimontanus (Pilsbry, 1924)
• Discus patulus (Deshayes, 1830)
• Discus porcelaineus Stodder
• Discus rotundatus (Muller, 1774)
• Discus selenitoides (Pilsbry, 1890)
• Discus selinitoides (Pilsbry, 1890) accepted as Discus selenitoides (Pilsbry, 1890)
• Discus shimeki (Pilsbry, 1890) accepted as Discus shimekii (Pilsbry, 1890)
• Discus shimekii (Pilsbry, 1890)
• Discus whitneyi (Newcomb, 1864)