• Johnsonia Adanson, 1763 accepted as Cedrela P. Browne, 1756 [Family: Meliaceae]
• Johnsonia Coquillett, 1895 [Family: Sarcophagidae]
• Johnsonia K.B. Korde, 1965 † accepted as Kordea E.A. Molinari-Novoa & M.D. Guiry, 2021 † [Family: Dasycladaceae]
• Johnsonia P. Miller, 1754 (unaccepted) [Family: Verbenaceae]
• Johnsonia R. Brown, 1810 [Family: Asphodelaceae]
• Johnsonia bivittata Curran, 1928
• Johnsonia borealis Reinhard, 1937
• Johnsonia camorin Lopes, 1991
• Johnsonia catamarca Lopes, 1991
• Johnsonia downsi Lopes, 1991
• Johnsonia elegans Coquillett, 1895
• Johnsonia frontalis Aldrich, 1929
• Johnsonia guaillabamba Lopes, 1991
• Johnsonia guimaraesi Lopes, 1991
• Johnsonia lagunicula Hall, 1933
• Johnsonia maculata Lopes, 1991
• Johnsonia mendesi Lopes, 1991
• Johnsonia minuta Lopes, 1991
• Johnsonia pomaschi Lopes, 1991
• Johnsonia robacki Lopes, 1975
• Johnsonia spinosa Korde †
• Johnsonia teutonia Lopes, 1991
• Johnsonia turrialba Lopes, 1991
• Johnsonia weyrauchi Lopes, 1991
• Johnsonia woodorum Pape, 1989
• Johnsoniana Poletaev, 2024 †
• Johnsoniatrypa Zhang, 1989 †