• Diacoma Gould, 1856 (uncertain)
• Diactoma Steiger, 1992 †
• Diadoma Westerlund, 1901 (uncertain)
• Diagoma Wade, 1842 accepted as Diazona Savigny, 1816
• Dianomys † (uncertain)
• Dianops Richter, 1923 †
• Dianous Samouelle, 1819
• Diapoma Cope, 1894
• Diaptomus Westwood in Partington, 1836
• Diasomus Dalman, 1824 accepted as Chiron Macleay, 1819 [Family: Scarabaeidae]
• Diasomus Didier & Seguy, 1953 accepted as Cardanus Westwood, 1834 [Family: Lucanidae]
• Diastoma Deshayes, 1850 [Family: Diastomatidae]
• Diastoma Möschler, 1881 [Family: Oecophoridae]
• Diastoma Norman, 1857 accepted as Distomus Gaertner in Pallas, 1774 [Family: Styelidae]
• Diatoma Bory de Saint-Vincent, 1824 [Family: Fragilariaceae]
• Diatoma Loureiro, 1790 accepted as Carallia Roxburgh, 1811 [Family: Rhizophoraceae]
• Diatomys Li, 1974
• Diatora Förster, 1868
• Diazoma Durkoop, 1970 † accepted as Kelusia Mamedov, 1978 † [Family: Ambocoeliidae]
• Diazoma Lamarck, 1816 (uncertain) [Family: Urochordata (awaiting allocation)]
• Diazoma Wallengren, 1881 accepted as Diazosma Bergroth, 1913 [Family: Trichoceridae]