| Monomorium (Holocomyrmex) foreli (Viehmeyer, 1914) | ⇒ Monomorium sordidum Forel, 1902 |
| Monomorium (Monomorium) vitiensis Mann, 1921 | |
| Monomorium abeillei André, 1881 | Eggcockle |
| Monomorium aberrans Forel, 1902 | |
| Monomorium abyssinicum Forel, 1894 | Compact astarte |
| Monomorium acutinode Collingwood ..., 1996 | |
| Monomorium adiastolon Heterick, 2006 | |
| Monomorium advena Brown & Wilson, 1957 | Corrugate solecurtus |
| Monomorium aeyade Collingwood ..., 1996 | |
| Monomorium affabile Santschi, 1926 | Texas lilliput |
| Monomorium afrc | |
| Monomorium afrum André, 1884 | |
| Monomorium aithoderum Heterick, 2001 | |
| Monomorium alamarum Bolton, 1987 | White-crest tellin |
| Monomorium albipes Heterick, 2001 | |
| Monomorium albopilosum Emery, 1895 | Turgid blossom |
| Monomorium algiricum Bernard, 1955 | Green liocyma |
| Monomorium altinode Santschi, 1910 | Catspaw |
| Monomorium amri Sharaf, 2025 | |
| Monomorium anceps Emery, 1895 | Turgid blossom |
| Monomorium anderseni Heterick, 2001 | |
| Monomorium andrei (Saunders, 1890) | ⇒ Monomorium advena Brown & Wilson, 1957 |
| Monomorium andrei andrei Saunders, 1890 | |
| Monomorium andrei bernardi Ettershank, 1966 | |
| Monomorium andrei fur Forel, 1894 | |
| Monomorium andrei furunculum Emery, 1924 | |
| Monomorium angustinode Forel, 1913 | |
| Monomorium annamense Donisthorpe, 1941 | |
| Monomorium antarcticum Smith, 1858 | Louisiana pearlshell |
| Monomorium anthracinum Heterick, 2001 | |
| Monomorium antipodum Forel, 1901 | Round combshell |
| Monomorium aper Emery, 1914 | |
| Monomorium aper dubium Emery, 1914 | |
| Monomorium arboreum Weber, 1943 | |
| Monomorium arenarium Heterick, 2001 | |
| Monomorium areniphilum Santschi, 1911 | |
| Monomorium armstrongi (McAreavey, 1949) | ⇒ Monomorium whitei Wheeler, W.M., 1915 |
| Monomorium arnoldi (Forel, 1913) | ⇒ Monomorium jonesi Arnold, 1952 |
| Monomorium asiriense Collingwood ..., 1996 | |
| Monomorium atomum Forel, 1902 | Southern acornshell |
| Monomorium atomum aharonii Menozzi, 1933 | |
| Monomorium atomum cooperi Donisthorpe, 1942 | |
| Monomorium atomum integrium Forel, 1902 | |
| Monomorium atomum procax Forel, 1911 | |
| Monomorium atomus (Donisthorpe, 1942) | ⇒ Monomorium atomum Forel, 1902 |
| Monomorium atomus integrium | |
| Monomorium aureorugosum Heterick, 2006 | |
| Monomorium australe Emery, 1886 | |
| Monomorium australicum (Forel, 1907) | ⇒ Syllophopsis australica Forel, 1907 |
| Monomorium baal Wheeler, W.M..., 1916 | |
| Monomorium balathir Bolton, 1987 | White-crest tellin |
| Monomorium banksi Forel, 1910 | |
| Monomorium barbatulum Mayr, 1877 | |
| Monomorium baushare Collingwood ..., 1996 | |
| Monomorium bequaerti Forel, 1913 | |
| Monomorium bevisi Arnold, 1944 | |
| Monomorium bicolor (Emery, 1877) | ⇒ Monomorium hirsutum Forel, 1910 |
| Monomorium bicolor complex | |
| Monomorium bicolor dictator | |
| Monomorium bicolor judaicum Menozzi, 1933 | |
| Monomorium bicorne Forel, 1907 | Cumberland leafshell |
| Monomorium bidentata (Smith, F., 1858) | ⇒ Myrmica bidentata Smith, 1858 |
| Monomorium bidentatum Mayr, 1887 | |
| Monomorium bifidoclypeatum Heterick, 2006 | |
| Monomorium bifidum Heterick, 2001 | Northern fanged mono ant |
| Monomorium bihamatum Heterick, 2001 | |
| Monomorium bimaculatum Wheeler, 1928 | |
| Monomorium binatu Bolton, 1987 | White-crest tellin |
| Monomorium biroi (Forel, 1907) | ⇒ Monomorium biroianum Bolton, 1995 |
| Monomorium biroianum Bolton, 1995 | Lens lucine |
| Monomorium bodenheimeri Menozzi, 1929 | Lord dwarf-venus |
| Monomorium boerorum Forel, 1910 | |
| Monomorium bogischi Wheeler, 1917 | |
| Monomorium boltoni Espadaler & ..., 1987 | Oval dwarf-venus |
| Monomorium borlei Santschi, 1937 | Leptosynapta montacutid |
| Monomorium brachythrix Heterick, 2001 | |
| Monomorium brasiliense Forel, 1908 | |
| Monomorium braunsi Mayr, 1901 | |
| Monomorium brocha Bolton, 1987 | |
| Monomorium broomense Forel, 1915 | |
| Monomorium broschorum Sparks, 2014 | |
| Monomorium brunneolucidulum Collingwood ..., 1996 | |
| Monomorium buettikeri Collingwood ..., 1996 | |
| Monomorium burchera Heterick, 2001 | |
| Monomorium butteli Forel, 1913 | |
| Monomorium butteli butteli Forel, 1913 | |
| Monomorium butteli demochrum Viehmeyer, 1916 | |
| Monomorium buxtoni Crawley, 1920 | |
| Monomorium capeyork Sparks, 2015 | |
| Monomorium capito Heterick, 2001 | |
| Monomorium captator Santschi, 1936 | |
| Monomorium captio Heterick, 2001 | |
| Monomorium carbo Forel, 1910 | |
| Monomorium carbonarium (Smith, 1858) | ⇒ Monomorium ebeninum Forel, 1891 |
| Monomorium carinatum Heterick, 2001 | Angled mono ant |
| Monomorium castaneum Heterick, 2001 | |
| Monomorium cekalovici Snelling, 1975 | |
| Monomorium centrale Forel, 1910 | |
| Monomorium chilense Fernández, 2007 | |
| Monomorium chilensis Ettershank, 1965 | |
| Monomorium chinense Santschi, 1925 | |
| Monomorium chnodes Heterick, 2006 | |
| Monomorium chobauti Emery, 1896 | Savannah lilliput |
| Monomorium chobauti aijer | |
| Monomorium chobauti ajjer Bernard, 1953 | |
| Monomorium cinctum Mayr, 1876 | |
| Monomorium clarinode Heterick, 2006 | |
| Monomorium clavicorne André, 1881 | Eggcockle |
| Monomorium clavicorne clavicorne André, 1881 | |
| Monomorium clavicorne punicum Santschi, 1915 | |
| Monomorium compressum Wheeler, 1914 | |
| Monomorium concolor Zhou, 2001 | |
| Monomorium consternens (Walker, 1859) | ⇒ Crematogaster consternens Walker, 1859 |
| Monomorium crawleyi Santschi, 1930 | |
| Monomorium creticum Emery, 1895 | Wavy dwarf-venus |
| Monomorium criniceps Mayr, 1879 | Dwarf surfclam |
| Monomorium criniceps nigrum Forel, 1902 | |
| Monomorium crinitum Heterick, 2001 | |
| Monomorium croceiventre Emery, 1914 | |
| Monomorium cryptobium Santschi, 1921 | |
| Monomorium cyaneum Wheeler, 1914 | |
| Monomorium dakarense Santschi, 1914 | Northern riffleshell |
| Monomorium damarense Forel, 1910 | |
| Monomorium dammame Collingwood ..., 1996 | |
| Monomorium decuria Heterick, 2001 | |
| Monomorium delabiei Fernández, 2007 | |
| Monomorium delagoense (Forel, 1894) | ⇒ Monomorium herero Forel, 1910 |
| Monomorium demisum Santschi, 1936 | |
| Monomorium dentatum Sharaf, 2007 | |
| Monomorium denticulatum Mayr, 1887 | |
| Monomorium denticulum Heterick, 2006 | |
| Monomorium dentigerum Roger, 1862 | |
| Monomorium destructor (Jerdon, 1851) | ⇒ Trichomyrmex destructor Jerdon, 1851 |
| Monomorium dichroum Forel, 1902 | |
| Monomorium dictator Santschi, 1937 | Leptosynapta montacutid |
| Monomorium dilatatum Bernard, 1977 | |
| Monomorium dine Cover & Rabe..., 2025 | |
| Monomorium dirie Collingwood ..., 1996 | |
| Monomorium disertum Forel, 1913 | |
| Monomorium disertum diserta | |
| Monomorium disetigerum Heterick, 2001 | |
| Monomorium disoriente Bolton, 1987 | White-crest tellin |
| Monomorium dolatu Bolton, 1987 | White-crest tellin |
| Monomorium donisthorpei (Crawley, 1915) | ⇒ Monomorium fieldi Forel, 1910 |
| Monomorium draculai Heterick, 2001 | |
| Monomorium drapenum Bolton, 1987 | White-crest tellin |
| Monomorium draxocum Bolton, 1987 | White-crest tellin |
| Monomorium dryhimi Aldawood & S..., 2011 | |
| Monomorium durokoppinense Heterick, 2001 | |
| Monomorium ebangaense Santschi, 1937 | Leptosynapta montacutid |
| Monomorium ebeninum Forel, 1891 | Ant |
| Monomorium edentatum Emery, 1897 | |
| Monomorium effractor Bolton, 1987 | White-crest tellin |
| Monomorium egens Forel, 1910 | |
| Monomorium elegantulum Heterick, 2001 | |
| Monomorium elghazalyi Sharaf & Ald..., 2017 | |
| Monomorium elgonense Santschi, 1935 | |
| Monomorium ellenarium Shigayev & S..., 2022 | |
| Monomorium elongatum Smith, 1876 | |
| Monomorium emarginatum DuBois, 1986 | Stephens dwarf-venus |
| Monomorium emeryi Mayr, 1895 | San Pedro mysella |
| Monomorium epinotale Santschi, 1923 | Inflated axinopsid |
| Monomorium eremoides Sparks, 2014 | |
| Monomorium eremophilum Heterick, 2001 | |
| Monomorium eremum Sparks, 2014 | |
| Monomorium ergatogyna Wheeler, 1904 | |
| Monomorium esharre Bolton, 1987 | White-crest tellin |
| Monomorium euryodon Heterick, 2001 | |
| Monomorium evansi Donisthorpe, 1918 | |
| Monomorium excelsior Arnold, 1926 | Lake fingernailclam |
| Monomorium excensurae Forel, 1915 | |
| Monomorium exchao Santschi, 1926 | Texas lilliput |
| Monomorium exiguum Forel, 1894 | |
| Monomorium falcatum McAreavey, 1949 | Kennerley venus |
| Monomorium fasciatum Santschi, 1920 | Giant cleftclam |
| Monomorium fastidium Bolton, 1987 | White-crest tellin |
| Monomorium fayfaense Collingwood ..., 1996 | |
| Monomorium ferodens Heterick, 2006 | |
| Monomorium fezzanense Collingwood ..., 1996 | |
| Monomorium fieldi Forel, 1910 | Little black mono ant |
| Monomorium firmum Santschi, 1926 | Texas lilliput |
| Monomorium fisheri Heterick, 2006 | |
| Monomorium flavigaster Clark, 1938 | |
| Monomorium flavimembra Heterick, 2006 | |
| Monomorium flavipes (Clark, 1938) | ⇒ Monomorium leae Forel, 1913 |
| Monomorium flavonigrum Heterick, 2001 | |
| Monomorium flavum Collingwood, 1961 | |
| Monomorium floricola Jerdon, 1851 | Bicolored trailing ant |
| Monomorium floricola floricola Jerdon, 1851 | |
| Monomorium forcipatum Emery, 1914 | |
| Monomorium fossulatum (Emery, 1894) | ⇒ Syllophopsis sechellensis Emery, 1894 |
| Monomorium fraterculum Santschi, 1919 | Tennessee riffleshell |
| Monomorium fridae Forel, 1905 | |
| Monomorium fugelanum Bolton, 1987 | White-crest tellin |
| Monomorium gabrielense Forel, 1916 | Painted eggcockle |
| Monomorium gallagheri Collingwood ..., 1996 | |
| Monomorium gallicum Seifert, 2025 | |
| Monomorium geminum Sparks, 2015 | |
| Monomorium gilberti Forel, 1902 | |
| Monomorium glabrum André, 1883 | |
| Monomorium glabrum clarum Forel, 1902 | |
| Monomorium glabrum glabrocriniceps Forel, 1902 | |
| Monomorium gongromos Heterick, 2006 | |
| Monomorium gracillimum Jerdon, 1851 | |
| Monomorium grassei Henriette To..., 1980 | Pacific littleneck |
| Monomorium guillarmodi Arnold, 1946 | |
| Monomorium guineense Bernard, 1953 | |
| Monomorium hainanense Wu & Wang, 1995 | |
| Monomorium hanaqe Collingwood ..., 1996 | |
| Monomorium hanneli Forel, 1907 | Cumberland leafshell |
| Monomorium hannonis Santschi, 1910 | Catspaw |
| Monomorium harithe Collingwood ..., 1996 | |
| Monomorium havilandi Forel, 1910 | |
| Monomorium heggyi Sharaf, 2021 | |
| Monomorium hemame Collingwood ..., 1996 | |
| Monomorium hemiphaeum (Clark, 1934) | ⇒ Monomorium leae Forel, 1913 |
| Monomorium hercules Viehmeyer, 1923 | Nut semele |
| Monomorium herero Forel, 1910 | |
| Monomorium hertogi Sparks, 2014 | |
| Monomorium hesperium Emery, 1895 | Iridescent lilliput |
| Monomorium hesperium hesperium Emery, 1915 | |
| Monomorium hesperium lanzarotense Wheeler, 1927 | |
| Monomorium hildebrandti (Forel, 1892) | ⇒ Syllophopsis hildebrandti Forel, 1892 |
| Monomorium hirsutum Forel, 1910 | |
| Monomorium hiten Terayama, 1996 | |
| Monomorium hoffmanni Sparks, 2014 | |
| Monomorium holothir Bolton, 1987 | White-crest tellin |
| Monomorium hospitum Viehmeyer, 1916 | |
| Monomorium howense (Wheeler, 1927) | ⇒ Monomorium tambourinense Forel, 1915 |
| Monomorium humilior Forel, 1910 | |
| Monomorium ilgii Forel, 1894 | |
| Monomorium ilium Forel, 1907 | Cumberland leafshell |
| Monomorium impexum Wheeler, 1928 | |
| Monomorium indet | |
| Monomorium indicum Forel, 1902 | Ant |
| Monomorium indicum kusnezowi Santschi, 1928 | |
| Monomorium infuscum Heterick, 2006 | |
| Monomorium inquietum Santschi, 1926 | Texas lilliput |
| Monomorium inquilinum DuBois, 1981 | Thin-shell littleneck |
| Monomorium insolescens Wheeler, 1934 | Monsoonal mono ant |
| Monomorium insularis (Clark, 1938) | ⇒ Monomorium leae Forel, 1913 |
| Monomorium intrudens Smith, 1874 | Arnold's dogwood |
| Monomorium intrudens pieli Santschi, 1925 | |
| Monomorium inusuale Fernández, 2007 | |
| Monomorium invidium Bolton, 1987 | White-crest tellin |
| Monomorium iyenasu Bolton, 1987 | White-crest tellin |
| Monomorium jacksoni Bolton, 1987 | White-crest tellin |
| Monomorium jizane Collingwood ..., 1996 | |
| Monomorium jonesi Arnold, 1952 | Fringed littleneck |
| Monomorium judaicum Menozzi, 1933 | |
| Monomorium junodi Forel, 1910 | |
| Monomorium katir Bolton, 1987 | White-crest tellin |
| Monomorium kelapre Bolton, 1987 | White-crest tellin |
| Monomorium kempi Durgadas Muk..., 1930 | Transparent razor |
| Monomorium khalidi Sharaf, 2021 | |
| Monomorium kidman Sparks, 2015 | |
| Monomorium kiliani Forel, 1902 | Wavy astarte |
| Monomorium kineti Weber, 1943 | |
| Monomorium kitectum Bolton, 1987 | White-crest tellin |
| Monomorium knappi Collingwood ..., 1996 | |
| Monomorium kugitangi Gennady M. D..., 1990 | |
| Monomorium kugleri ♰ A. G. Radchenko, 2009 | |
| Monomorium kusnezovi Santschi, 1928 | |
| Monomorium kusnezowi Santschi, 1928 | |
| Monomorium lacunosum Heterick, 2001 | |
| Monomorium laeve Mayr, 1876 | Yellow mono ant |
| Monomorium lameerei Forel, 1902 | |
| Monomorium latastei Emery, 1895 | |
| Monomorium latinode Mayr, 1872 | Wasp |
| Monomorium latinodoides Wheeler, W.M., 1928 | |
| Monomorium leae Forel, 1913 | |
| Monomorium leda Forel, 1915 | |
| Monomorium legulum Heterick, 2001 | |
| Monomorium legulus Heterick, 2001 | |
| Monomorium lene Santschi, 1920 | Giant cleftclam |
| Monomorium lepidum Heterick, 2006 | |
| Monomorium libanicum Tohmé, H. & ..., 1980 | |
| Monomorium liliuokalanii Forel, 1899 | Ant |
| Monomorium lindbergi Pisarski, 1967 | |
| Monomorium lippulum (Wheeler, 1927) | ⇒ Pheidole antipodum Smith, 1858 |
| Monomorium longi Forel, 1902 | |
| Monomorium longiceps (Wheeler, W.M., 1934) | ⇒ Monomorium annamense Donisthorpe, 1941 |
| Monomorium longinode Heterick, 2001 | |
| Monomorium longipes Emery, 1914 | |
| Monomorium lorenzoi Seifert, 2025 | |
| Monomorium lubricum Arnold, 1948 | |
| Monomorium luisae Forel, 1904 | |
| Monomorium luteum Emery, 1881 | |
| Monomorium macarthuri Heterick, 2001 | |
| Monomorium macrops Arnold, 1944 | |
| Monomorium madecassum Forel, 1892 | |
| Monomorium mahyoubi Collingwood ..., 1996 | |
| Monomorium majarishe Collingwood ..., 1996 | |
| Monomorium majeri Heterick, 2001 | |
| Monomorium major Bernard, 1953 | Savannah lilliput |
| Monomorium malamixtum Bolton, 1987 | White-crest tellin |
| Monomorium malatu Bolton, 1987 | White-crest tellin |
| Monomorium manir Bolton, 1987 | White-crest tellin |
| Monomorium mantazenum Bolton, 1987 | White-crest tellin |
| Monomorium marjoriae DuBois, 1986 | Stephens dwarf-venus |
| Monomorium marmule Collingwood ..., 1996 | |
| Monomorium marshi Bolton, 1987 | White-crest tellin |
| Monomorium maryannae Sparks, 2014 | |
| Monomorium matame Collingwood ..., 1996 | |
| Monomorium mavide Bolton, 1987 | White-crest tellin |
| Monomorium mayri Forel, 1902 | |
| Monomorium mayrianum ♰ W. M. Wheeler, 1915 | Many-line lucine |
| Monomorium medinae (Forel, 1892) | ⇒ Monomorium fridae Forel, 1905 |
| Monomorium mediocre Santschi, 1920 | Giant cleftclam |
| Monomorium megalops Heterick, 2001 | |
| Monomorium melleum Emery, 1914 | |
| Monomorium merepah Sparks, 2014 | |
| Monomorium micrommaton Heterick, 2006 | |
| Monomorium micron (Crawley, 1925) | ⇒ Monomorium sordidum Forel, 1902 |
| Monomorium micropacum Bolton, 1987 | White-crest tellin |
| Monomorium mictile Forel, 1910 | |
| Monomorium mictilis Forel, 1910 | |
| Monomorium micula Heterick, 2001 | |
| Monomorium minima Buckley, 1867 | |
| Monomorium minimum (Buckley, 1867) | ⇒ Monomorium cyaneum Wheeler, 1914 |
| Monomorium minor Stitz, 1923 | |
| Monomorium minutum (Mayr, 1855) | ⇒ Monomorium ergatogyna Wheeler, 1904 |
| Monomorium mirandum Arnold, 1955 | |
| Monomorium mitchell Sparks, 2014 | |
| Monomorium moathi Sharaf & Col..., 2010 | |
| Monomorium modestum Santschi, 1914 | Northern riffleshell |
| Monomorium mohammedi Sharaf & Hit..., 2018 | |
| Monomorium monomorium Bolton, 1987 | White-crest tellin |
| Monomorium montanum Collingwood ..., 1996 | |
| Monomorium musicum Forel, 1910 | |
| Monomorium najrane Collingwood ..., 1996 | |
| Monomorium nanum Heterick, 2001 | |
| Monomorium nengraharicum Pisarski, 1970 | |
| Monomorium niger (McAreavey, 1949) | ⇒ Monomorium bicorne Forel, 1907 |
| Monomorium nightcapense Heterick, 2001 | |
| Monomorium nigricans Heterick, 2006 | |
| Monomorium nigriceps Heterick, 2001 | Little black mono ant |
| Monomorium niloticoides Forel, 1910 | |
| Monomorium niloticum Emery, 1881 | |
| Monomorium niloticum gracilicorne Stitz, 1917 | |
| Monomorium niloticum niloticoides Forel, 1910 | |
| Monomorium nimihil Collingwood, 2004 | |
| Monomorium nirvanum Bolton, 1987 | White-crest tellin |
| Monomorium nitidiventre Emery, 1893 | Tapered pigtoe |
| Monomorium notorthotenes Heterick, 2006 | |
| Monomorium notulum Forel, 1910 | |
| Monomorium noualhieri Emery, 1895 | |
| Monomorium noxitum Bolton, 1987 | White-crest tellin |
| Monomorium nuptialis Forel, 1913 | |
| Monomorium nuptualis Forel, 1913 | |
| Monomorium occidaneum (Crawley, 1922) | ⇒ Monomorium leae Forel, 1913 |
| Monomorium occidentale Bernard, 1953 | Savannah lilliput |
| Monomorium ocellatum Arnold, 1920 | |
| Monomorium oodnadatta Sparks, 2015 | |
| Monomorium opacior Forel, 1913 | |
| Monomorium opacum Forel, 1913 | |
| Monomorium ophthalmicum Forel, 1894 | |
| Monomorium orangiae Arnold, 1956 | |
| Monomorium orientale Mayr, 1879 | |
| Monomorium oscaris Forel, 1894 | |
| Monomorium osiridis Santschi, 1915 | Pale lilliput |
| Monomorium pacis Forel, 1915 | |
| Monomorium pallidipes Forel, 1910 | |
| Monomorium pallidum Donisthorpe, 1918 | |
| Monomorium parantarcticum Heterick, 2001 | |
| Monomorium parcipatum | |
| Monomorium parvinode Forel, 1894 | |
| Monomorium paternum Bolton, 1987 | White-crest tellin |
| Monomorium pergandei Emery, 1893 | |
| Monomorium perplexum Radchenko, 1997 | |
| Monomorium personatum Santschi, 1937 | Leptosynapta montacutid |
| Monomorium petiolatum Heterick, 2001 | |
| Monomorium pharaonis Linnaeus, 1758 | Egyptian red ant |
| Monomorium phoeniceum Santschi, 1927 | |
| Monomorium phoenicum Santschi, 1927 | Cuba transennella |
| Monomorium pilbara Sparks, 2014 | |
| Monomorium pilipes ♰ G. L. Mayr, 1868 | |
| Monomorium platynode Heterick, 2006 | |
| Monomorium platynodis Heterick, 0 | |
| Monomorium pubescens Heterick, 2001 | |
| Monomorium pulchrum Santschi, 1926 | Texas lilliput |
| Monomorium punctipectore Zhou, 2001 | |
| Monomorium punctipectoris Zhou, 2001 | |
| Monomorium punctulatum Heterick, 2003 | |
| Monomorium qarahe Collingwood ..., 1996 | |
| Monomorium rabirium Bolton, 1987 | White-crest tellin |
| Monomorium rastractum Bolton, 1987 | White-crest tellin |
| Monomorium rastractumm Bolton, 1987 | |
| Monomorium ravenshoense Heterick, 2001 | |
| Monomorium rhopalocerum Emery, 1895 | Turgid blossom |
| Monomorium rimae Collingwood ..., 1996 | |
| Monomorium riyadhe Collingwood ..., 1996 | |
| Monomorium robertsoni Heterick, 2006 | |
| Monomorium robustior (Forel, 1892) | ⇒ Trichomyrmex robustior Forel, 1892 |
| Monomorium rosae Santschi, 1920 | Giant cleftclam |
| Monomorium rothsteini Forel, 1902 | Harvester Ant |
| Monomorium rothsteini humilior (Forel, 1910) | ⇒ Monomorium rothsteini Forel, 1902 |
| Monomorium rothsteini tosta Forel, 1902 | |
| Monomorium rotundatum Santschi, 1920 | Giant cleftclam |
| Monomorium rubriceps Mayr, 1876 | Sickle jackknife |
| Monomorium rubriceps cincta Mayr, 1876 | |
| Monomorium rubriceps rubrum Forel, 1913 | |
| Monomorium rufonigrum Heterick, 2001 | |
| Monomorium rufulum Stitz, 1923 | |
| Monomorium rugifrons Smith, F., 1858 | |
| Monomorium ruzskyi Dlussky & Za..., 1985 | |
| Monomorium sagei Forel, 1902 | |
| Monomorium sahlbergi Emery, 1898 | Ant |
| Monomorium sakalavum Santschi, 1928 | |
| Monomorium salomonis (Linnaeus, 1758) | ⇒ Monomorium junodi Forel, 1910 |
| Monomorium salomonis bedui Santschi, 1936 | |
| Monomorium salomonis carbo (Forel, 1910) | ⇒ Monomorium carbo Forel, 1910 |
| Monomorium salomonis didonis Santschi, 1921 | |
| Monomorium salomonis molestum Santschi, 1936 | |
| Monomorium salomonis obscuriceps Santschi, 1921 | |
| Monomorium salomonis salomonis Linnaeus, 1758 | |
| Monomorium salomonis scipionis Santschi, 1921 | |
| Monomorium salomonis sommieri Emery, 1908 | |
| Monomorium salomonis subnitidum Emery, 1915 | |
| Monomorium salomonis targui Santschi, 1936 | |
| Monomorium salomonis transversale Santschi, 1921 | |
| Monomorium salomonis volubile Santschi, 1936 | |
| Monomorium salomonis zanoni Santschi, 1927 | |
| Monomorium sanguinolentum (Wheeler, 1927) | ⇒ Monomorium rubriceps Mayr, 1876 |
| Monomorium santschii Forel, 1905 | Texas aligena |
| Monomorium sarawatense Sharaf & Ald..., 2013 | |
| Monomorium sarawatensis Sharaf & Ald..., 2013 | |
| Monomorium scabriceps Mayr, 1879 | Tubercled blossom |
| Monomorium scabriceps crinicipitoscabriceps Forel, 1902 | |
| Monomorium schultzei Forel, 1910 | |
| Monomorium schurri Forel, 1902 | |
| Monomorium sculpturatum Clark, 1934 | |
| Monomorium sechellense (Emery, 1894) | ⇒ Syllophopsis sechellensis Emery, 1894 |
| Monomorium senegalense Roger, 1862 | Subglobose diplodon |
| Monomorium sersalatum Bolton, 1987 | White-crest tellin |
| Monomorium setuliferum Forel, 1910 | |
| Monomorium shattucki Heterick, 2001 | |
| Monomorium shilohense Forel, 1913 | |
| Monomorium shuckardi Forel, 1895 | |
| Monomorium sichelii Roger, 1862 | |
| Monomorium silaceum Heterick, 2001 | |
| Monomorium silvestrii Wheeler, W.M., 1927 | Iridescent lilliput |
| Monomorium smithi Forel, 1892 | |
| Monomorium smithii Forel, 1892 | |
| Monomorium sommieri Emery, 1908 | |
| Monomorium sordidum Forel, 1902 | |
| Monomorium sordidum castaneum | |
| Monomorium sordidum nigriventre Forel, 1902 | |
| Monomorium spatulicorne Kuznetsov-Ug..., 1926 | |
| Monomorium spectrum Bolton, 1987 | White-crest tellin |
| Monomorium speculiceps (Santschi, 1928) | ⇒ Monomorium excelsior Arnold, 1926 |
| Monomorium speculum Sparks, 2014 | |
| Monomorium speluncarum Santschi, 1914 | Northern riffleshell |
| Monomorium springvalense Forel, 1913 | |
| Monomorium sryetum Bolton, 1987 | White-crest tellin |
| Monomorium stagnum Sparks, 2014 | |
| Monomorium stictonotum Heterick, 2001 | |
| Monomorium strangulatum Santschi, 1921 | |
| Monomorium striatifrons Heterick, 2001 | |
| Monomorium subapterum (Wheeler, 1917) | ⇒ Monomorium rothsteini Forel, 1902 |
| Monomorium subapterum bogischi (Wheeler, 1917) | ⇒ Monomorium rothsteini Forel, 1902 |
| Monomorium subcoecum Emery, 1894 | |
| Monomorium subcomae Lush, 2008 | |
| Monomorium subdentatum Forel, 1913 | |
| Monomorium subdenticorne Collingwood ..., 1996 | |
| Monomorium sublamellatum Heterick, 2003 | |
| Monomorium subopacum (Smith, F., 1858) | ⇒ Monomorium hirsutum Forel, 1910 |
| Monomorium subopacum ebaricum Menozzi, 1933 | |
| Monomorium subopacum ebraicum Menozzi, 1933 | |
| Monomorium subopacum ebricum Smith, 1858 | |
| Monomorium subopacum planidorsum Emery, 1915 | |
| Monomorium subopacum subopacum Smith, 1858 | |
| Monomorium suleyile Collingwood ..., 1996 | |
| Monomorium suteri Forel, 1892 | |
| Monomorium sutu Bolton, 1987 | White-crest tellin |
| Monomorium sydneyense Forel, 1902 | Sydney mono ant |
| Monomorium sydneyense nigellum Emery, 1914 | |
| Monomorium symmotu Bolton, 1987 | White-crest tellin |
| Monomorium syriacum Tohmé, H. & ..., 1980 | Pacific littleneck |
| Monomorium tablense Santschi, 1932 | |
| Monomorium taedium Bolton, 1987 | White-crest tellin |
| Monomorium talbotae DuBois, 1981 | Thin-shell littleneck |
| Monomorium talpa (Emery, 1911) | ⇒ Syllophopsis australica Forel, 1907 |
| Monomorium tambourinense Forel, 1915 | Tambourine Mountain mono ant |
| Monomorium tanysum Bolton, 1987 | White-crest tellin |
| Monomorium taprobanae Forel, 1913 | |
| Monomorium tchelichofi Forel, 1914 | |
| Monomorium tenebrosum Sparks, 2014 | |
| Monomorium termitarium (Forel, 1910) | ⇒ Monomorium disertum Forel, 1913 |
| Monomorium termitobium Forel, 1892 | |
| Monomorium thrascoleptum Bolton, 1987 | White-crest tellin |
| Monomorium topend Sparks, 2014 | |
| Monomorium torrens Sparks, 2014 | |
| Monomorium torvicte Bolton, 1987 | White-crest tellin |
| Monomorium trageri DuBois, 1986 | Stephens dwarf-venus |
| Monomorium trake Bolton, 1987 | White-crest tellin |
| Monomorium tricolor Emery, 1914 | |
| Monomorium triviale Wheeler, W.M., 1906 | |
| Monomorium tumaire Collingwood ..., 1996 | |
| Monomorium tynsorum Bolton, 1987 | White-crest tellin |
| Monomorium uga1 | |
| Monomorium vaguum Santschi, 1930 | |
| Monomorium valtinum (Bolton, 1987) | ⇒ Monomorium hanneli Forel, 1907 |
| Monomorium vatranum Bolton, 1987 | White-crest tellin |
| Monomorium vecte Bolton, 1987 | White-crest tellin |
| Monomorium venustum Smith, F., 1858 | Louisiana pearlshell |
| Monomorium venustum niloticoides Forel, 1910 | |
| Monomorium versicolor Heterick, 2006 | |
| Monomorium viator Santschi, 1923 | Inflated axinopsid |
| Monomorium viride Brown, 1943 | |
| Monomorium viridis Brown, 1943 | |
| Monomorium viridum Brown, 1943 | |
| Monomorium vitiense Mann, 1921 | |
| Monomorium voeltzkowi Forel, 1907 | |
| Monomorium vonatu Bolton, 1987 | White-crest tellin |
| Monomorium wahibiense Collingwood ..., 1996 | |
| Monomorium westi Bolton, 1987 | White-crest tellin |
| Monomorium wheelerorum (DuBois, 1986) | ⇒ Monomorium ergatogyna Wheeler, 1904 |
| Monomorium whitei Wheeler, W.M., 1915 | Many-line lucine |
| Monomorium willowmorense Bolton, 1987 | White-crest tellin |
| Monomorium wilsoni Espadaler, 2007 | |
| Monomorium wroughtoni Forel, 1902 | |
| Monomorium wroughtonianum (Ettershank, 1966) | ⇒ Trichomyrmex wroughtoni Forel, 1911 |
| Monomorium xantheklemma Heterick, 2001 | |
| Monomorium xanthognathum Arnold, 1944 | |
| Monomorium xuthosoma Heterick, 2006 | |
| Monomorium yemene Collingwood ..., 1996 | |
| Monomorium zhinu Terayama, 2009 | |
| Monomorium zulu Santschi, 1914 | Northern riffleshell |
