• Hottonia Linnaeus, 1753
• Houstonia Boucek, 1988 [Family: Eurytomidae]
• Houstonia Linnaeus, 1753 [Family: Rubiaceae]
• Houttuynia Fuhrmann, 1920 [Family: Davaineidae]
• Houttuynia Houttuyn, 1780 (unaccepted) [Family: Iridaceae]
• Houttuynia Thunberg, 1783 [Family: Saururaceae]
• Houtuynia Thunberg, 1783 (unaccepted)
• Huttonia E. Grove & G. Sturt, 1887 accepted as Neohuttonia O. Kuntze, 1898 [Family: Biddulphiaceae]
• Huttonia Johnston, 1891 accepted as Potamopyrgus Stimpson, 1865 [Family: Hydrobiidae]
• Huttonia Kirk, 1882 accepted as Herpetopoma Pilsbry in Tryon & Pilsbry, 1890 [Family: Chilodontaidae]
• Huttonia Marshall, 1896 (uncertain) [Family: Lauxaniidae]
• Huttonia Pickard Cambridge, 1880 [Family: Huttoniidae]
• Huttonia Sternberg, 1837 † [Family: Calamitaceae]