• Mona Hulst, 1888 (uncertain) [Family: Lepidoptera (awaiting allocation)]
• Mona Ö. Nilsson, 1966 accepted as Montia Linnaeus, 1753 [Family: Montiaceae]
• Mona Reichenbach, 1863 accepted as Cercopithecus Linnaeus, 1758 [Family: Cercopithecidae]
• Mona Smith, 1911 † (uncertain) [Family: Porifera (awaiting allocation)]
• Monabris Kuzin, 1954 accepted as Mylabris Fabricius, 1775
• Monaca Temminck in Temminck & Laugier, 1822 accepted as Monasa Vieillot, 1816
• Monacantha Diakonoff, 1973 accepted as Baburia Koçak, 1981 [Family: Tortricidae]
• Monacantha Hope, 1843 (uncertain) [Family: Coleoptera (awaiting allocation)]
• Monacanthella James, 1936
• Monacanthella gracilis James, 1936 accepted as Acropeltates kerteszi Szilady, 1929
• Monacanthidae Nardo, 1843
• Monacanthites Tozer, 1965 †
• Monacanthobunus Roewer, 1915 accepted as Equitius Simon, 1880
• Monacanthobunus continentalis Roewer, 1915 accepted as Equitius doriae Simon, 1880
• Monacanthobunus tasmanicus Roewer, 1915 accepted as Hickmanoxyomma tasmanicum (Roewer, 1915)
• Monacanthocnemis Ducke, 1905
• Monacanthocnemis buyssoni Ducke
• Monacanthomyia Brunetti, 1912
• Monacanthomyia annandalei Brunetti, 1912
• Monacanthomyia becki James, 1948
• Monacanthomyia robertsi James, 1980
• Monacanthomyia stigmata James, 1980
• Monacanthonyx Bates, 1892 accepted as Dicranoncus de Chaudoir, 1850
• Monacanthonyx pocillator Bates, 1892 accepted as Dicranoncus pocillator (Bates, 1892)
• Monacanthus Oken, 1817
• Monacanthus albopunctatus Seale, 1901 accepted as Cantherhines dumerilii (Hollard, 1854)
• Monacanthus alternans Ogilby, 1899 accepted as Pervagor alternans (Ogilby, 1899)
• Monacanthus amphioxus Cope, 1871 accepted as Cantherhines pullus (Ranzani, 1842)
• Monacanthus anginosus Hollard, 1853 accepted as Aluterus monoceros (Linnaeus, 1758)
• Monacanthus aspersus Hollard, 1854 accepted as Cantherhines pardalis (Rüppell, 1837)
• Monacanthus aspricaudus Hollard, 1854 accepted as Pervagor aspricaudus (Hollard, 1854)
• Monacanthus auratus Castelnau, 1861 accepted as Stephanolepis auratus (Castelnau, 1861)
• Monacanthus auriga Lowe, 1852 accepted as Stephanolepis hispidus (Linnaeus, 1766)
• Monacanthus baudini Castelnau, 1873
• Monacanthus bertolonii Bianconi, 1855 accepted as Paramonacanthus frenatus (Peters, 1855)
• Monacanthus broekii Bleeker, 1858 accepted as Paramonacanthus japonicus (Tilesius, 1809)
• Monacanthus brunneus Castelnau, 1873 accepted as Cantherhines pardalis (Rüppell, 1837)
• Monacanthus cantoris Bleeker, 1852 accepted as Monacanthus chinensis (Osbeck, 1765)
• Monacanthus castelnaui Macleay, 1881 accepted as Acanthaluteres brownii (Richardson, 1846)
• Monacanthus cheverti Alleyne & Macleay, 1877 accepted as Rhinecanthus aculeatus (Linnaeus, 1758)
• Monacanthus chinensis (Osbeck, 1765)
• Monacanthus choirocephalus Bleeker, 1851 accepted as Paramonacanthus choirocephalus (Bleeker, 1851)
• Monacanthus ciliatus (Mitchill, 1818)
• Monacanthus cirrhifer Temminck & Schlegel, 1850 accepted as Stephanolepis cirrhifer (Temminck & Schlegel, 1850)
• Monacanthus convexirostris Günther, 1870 accepted as Meuschenia australis (Donovan, 1824)
• Monacanthus cryptodon Bleeker, 1855 accepted as Paramonacanthus cryptodon (Bleeker, 1855)
• Monacanthus curtorhynchos Bleeker, 1855 accepted as Paramonacanthus japonicus (Tilesius, 1809)
• Monacanthus curtorhynchus Bleeker, 1855 accepted as Paramonacanthus curtorhynchos (Bleeker, 1855)
• Monacanthus daemelii Günther, 1876 accepted as Scobinichthys granulatus (White, 1790)
• Monacanthus davidsonii Cope, 1871 accepted as Monacanthus ciliatus (Mitchill, 1818)
• Monacanthus distortus Castelnau, 1873 accepted as Brachaluteres jacksonianus (Quoy & Gaimard, 1824)
• Monacanthus dumerilii Hollard, 1854 accepted as Cantherhines dumerilii (Hollard, 1854)
• Monacanthus edelensis Castelnau, 1875
• Monacanthus fatensis Seale, 1906 accepted as Cantherhines pardalis (Rüppell, 1837)
• Monacanthus filamentosus Valenciennes, 1838 accepted as Stephanolepis hispidus (Linnaeus, 1766)
• Monacanthus filicauda Günther, 1880 accepted as Paramonacanthus filicauda (Günther, 1880)
• Monacanthus forsteri Castelnau, 1872
• Monacanthus frauenfeldii Kner, 1867 accepted as Nelusetta ayraudi (Quoy & Gaimard, 1824) accepted as Nelusetta ayraud (Quoy & Gaimard, 1824)
• Monacanthus frenatus Peters, 1855 accepted as Paramonacanthus frenatus (Peters, 1855)
• Monacanthus fronticinctus Günther, 1867 accepted as Cantherhines fronticinctus (Günther, 1867)
• Monacanthus fuliginosus Macleay, 1883 accepted as Cantherhines pardalis (Rüppell, 1837)
• Monacanthus fuscus Fischer, 1885 accepted as Aluterus heudelotii Hollard, 1855
• Monacanthus gallinula Valenciennes, 1843 accepted as Stephanolepis hispidus (Linnaeus, 1766)
• Monacanthus gunnii Günther, 1870 accepted as Eubalichthys gunnii (Günther, 1870)
• Monacanthus guntheri Macleay, 1881
• Monacanthus guttulatus Macleay, 1878 accepted as Acanthaluteres brownii (Richardson, 1846)
• Monacanthus hajam Bleeker, 1851 accepted as Acreichthys hajam (Bleeker, 1851)
• Monacanthus heudelotii (Hollard, 1855) accepted as Aluterus heudelotii Hollard, 1855
• Monacanthus hippocrepis (Quoy & Gaimard, 1824) accepted as Meuschenia hippocrepis (Quoy & Gaimard, 1824)
• Monacanthus hispidus (Linnaeus, 1766) accepted as Stephanolepis hispidus (Linnaeus, 1766)
• Monacanthus homopterus Cope, 1871 accepted as Cantherhines pullus (Ranzani, 1842)
• Monacanthus houttuyni Bleeker, 1854 accepted as Cantherhines pardalis (Rüppell, 1837)
• Monacanthus howensis Ogilby, 1889 accepted as Cantherhines dumerilii (Hollard, 1854)
• Monacanthus hypargyreus Cope, 1871 accepted as Thamnaconus hypargyreus (Cope, 1871)
• Monacanthus irroratus Poey, 1860 accepted as Cantherhines pullus (Ranzani, 1842)
• Monacanthus isogramma Bleeker, 1857 accepted as Paramonacanthus sulcatus (Hollard, 1854)
• Monacanthus janthinosoma Bleeker, 1854 accepted as Pervagor janthinosoma (Bleeker, 1854)
• Monacanthus kibikib Montrouzier, 1857 accepted as Cantherhines pardalis (Rüppell, 1837)
• Monacanthus laevicaudatus Duncker & Mohr, 1929 accepted as Cantherhines pardalis (Rüppell, 1837)
• Monacanthus lesueurii Castelnau, 1873 accepted as Meuschenia freycineti (Quoy & Gaimard, 1824)
• Monacanthus lineoguttatus Hollard, 1854 accepted as Acanthaluteres brownii (Richardson, 1846)
• Monacanthus macrocerus Hollard, 1853 accepted as Cantherhines macrocerus (Hollard, 1853)
• Monacanthus macrolepis Fraser-Brunner, 1941 accepted as Monacanthus chinensis (Osbeck, 1765)
• Monacanthus macrurus Bleeker, 1856 accepted as Pseudomonacanthus macrurus (Bleeker, 1856)
• Monacanthus maculicauda Ogilby, 1886 accepted as Aluterus scriptus (Osbeck, 1765)
• Monacanthus margaritifer Castelnau, 1873
• Monacanthus megalourus Richardson, 1843 accepted as Monacanthus chinensis (Osbeck, 1765)
• Monacanthus melanistius Regan, 1908 accepted as Cantherhines pardalis (Rüppell, 1837)
• Monacanthus melanocephalus Bleeker, 1853 accepted as Pervagor melanocephalus (Bleeker, 1853)
• Monacanthus melanoproctes Boulenger, 1889 accepted as Thamnaconus melanoproctes (Boulenger, 1889)
• Monacanthus melanuropterus Bleeker, 1853 accepted as Cantherhines pardalis (Rüppell, 1837)
• Monacanthus melas Günther, 1876 accepted as Eubalichthys gunnii (Günther, 1870)
• Monacanthus modestus Günther, 1877 accepted as Thamnaconus modestus (Günther, 1877)
• Monacanthus mosaicus Ramsay & Ogilby, 1886 accepted as Eubalichthys mosaicus (Ramsay & Ogilby, 1886)
• Monacanthus multiradiatus Günther, 1870 accepted as Meuschenia freycineti (Quoy & Gaimard, 1824)
• Monacanthus mylii (Bory de Saint-Vincent, 1822) accepted as Monacanthus chinensis (Osbeck, 1765)
• Monacanthus nasutus Swainson, 1839 accepted as Cantherhines sandwichiensis (Quoy & Gaimard, 1824)
• Monacanthus natalensis Gilchrist & Thompson, 1911 accepted as Cantherhines pardalis (Rüppell, 1837)
• Monacanthus nematophorus Günther, 1870 accepted as Paramonacanthus nematophorus (Günther, 1870)
• Monacanthus nemurus Bleeker, 1851 accepted as Paramonacanthus choirocephalus (Bleeker, 1851)