| Name | Authorship | Pages | Forms | Locality | Notes |
|---|---|---|---|---|---|
| Myrmica monticola | Creighton, 1950a | 101 | w.m. | U.S.A. (Colorado) | |
| Myrmica moravica | Soudek, 1922b | 45, fig. 21 | w.q. | CZECH REPUBLIC | |
| Myrmica moravica var. dagmarae | Sadil, 1939d | 108 | w.q.m. | CZECH REPUBLIC | |
| Myrmica multiplex | Radchenko & Elmes, 2009a | 81, figs. 46-55 | w.q. | CHINA (Shaanxi) | |
| Myrmica muscorum | Nylander, 1846b | 1054 | w.q.m. | FINLAND | |
| Myrmica mutica | Emery, 1895d | 311 | w. | U.S.A. (Colorado) | |
| Myrmica mutica | Nylander, 1849 | 39 | w.q.m. | RUSSIA | |
| Myrmica myrmecophila | Wasmann, 1910 | 516 | w. | AUSTRIA | |
| Myrmica myrmicoxena | Forel, 1895j | 143 | q. | SWITZERLAND | |
| †Myrmica nebulosa | Novák, 1877 | 91, pl. 3, fig. 1 | m. | CZECH REPUBLIC (Oligocene) | |
| Myrmica nefaria | Bharti, 2012a | 150, figs. 1-17 | w.q.m. | INDIA (Himachal Pradesh) | |
| Myrmica neglecta | Stärcke, 1942d | xxvii (footnote) | |||
| Myrmica nitida | Radchenko & Elmes, 1999a | 35, fig. 3 (1-10) | w.q.m. | INDIA (Jammu & Kashmir) | |
| Myrmica nitidula | Nylander, 1846b | 1058 | w. | FINLAND | |
| Myrmica nodicornis | Chappell, 1886 | 58 | w.m. | UNITED KINGDOM | |
| Myrmica novaeboracensis | Buckley, 1867 | 337 | q. | U.S.A. (New York) | |
| †Myrmica nungesseri | Jessen, 2020 | 1035, fig. 11f, g | q. | GERMANY (Oligocene) | |
| Myrmica nylanderi | Foerster, 1850a | 53 | m. | GERMANY | |
| Myrmica oblonga | Smith, 1860b | 107 | w. | INDONESIA (Bacan) | |
| Myrmica obscurata | Motschoulsky, 1863 | 16 | w. | SRI LANKA | |
| †Myrmica obsoleta | Heer, 1849 | 160, pl. 13, fig. 3 | q. | GERMANY (Miocene) | |
| †Myrmica obsoleta var. minor | Heer, 1849 | 160, pl. 13, fig. 3b | m. | AUSTRIA (Miocene) | |
| Myrmica occidentalis | Cresson, 1865b | 426 | w.q. | U.S.A. (Colorado) | |
| Myrmica ominosa | Gerstäcker, 1859 | 263 | w. | MOZAMBIQUE | |
| Myrmica onoyamai | Radchenko & Elmes, 2006 | 507, figs. 23-42 | w.q.m. | JAPAN | |
| Myrmica opaca | Smith, 1861b | 47 | w. | INDONESIA (Sulawesi) | |
| Myrmica opposita | Say, 1836 | 292 | w.m. | U.S.A. | |
| Myrmica ordinaria | Radchenko & Elmes, 1999a | 41, fig. 4 (11-16) | w.q. | INDIA (Jammu & Kashmir) | |
| Myrmica orthostyla | Arnol'di, 1976a | 552, fig, 8 | w.q.m. | KYRGYZSTAN | |
| Myrmica oui | Chen et al., 2016 | 105, figs. 23-25 | w. | CHINA (Guizhou) | |
| Myrmica pachei | Forel, 1906b | 79 | w.q.m. | NEPAL | |
| Myrmica paleata | Lund, 1831a | 116 (footnote) | w. | BRAZIL (Minas Gerais) | |
| Myrmica pallida | Nylander, 1849 | 42 | w. | ITALY (Sicily) | |
| Myrmica pallidula | Nylander, 1849 | 42 | w. | ITALY (Sicily) | |
| †Myrmica paradoxa | Radchenko et al., 2007 | 1496, figs. 2, 3 | w. | GERMANY (Saxonian Amber, Eocene) | |
| Myrmica parallela | Smith, 1859a | 147 | w. | INDONESIA (Aru Is) | |
| Myrmica pararitae | Radchenko & Elmes, 2008b | 773, figs. 16-25 | w.q. | CHINA (Sichuan) | |
| Myrmica parvula | Schenck, 1852 | 103 | w. | GERMANY | |
| Myrmica pedestris | Smith, 1861b | 46 | q. | INDONESIA (Sulawesi) | |
| Myrmica pellucida | Smith, 1857a | 71 | w. | SINGAPORE | |
| Myrmica pelops | Seifert, 2003b | 148, figs. 9, 12, 14, 15 | w. | GREECE | |
| Myrmica perelegans | Curtis, 1854 | 214, pl. 23, figs. 15-17 | w.q.m. | UNITED KINGDOM | |
| Myrmica pertinax | Smith, 1861b | 46 | w. | INDONESIA (Sulawesi) | |
| Myrmica petita | Radchenko & Elmes, 1999a | 45, fig. 5 (11-15) | q. | INDIA (Jammu & Kashmir) | |
| Myrmica petrophila | Gredler, 1858 | 21 | |||
| Myrmica phalacra | Radchenko & Elmes, 2009a | 74, figs. 21-30 | w.q. | CHINA (Shaanxi) | |
| Myrmica pilinodis | Motschoulsky, 1863 | 16 | w. | SRI LANKA | |
| Myrmica pilosiscapus | Bondroit, 1920a | 147, fig. 1 | w.q.m. | FRANCE, BELGIUM, GERMANY, SWITZERLAND, UNITED KINGDOM | |
| Myrmica pilosiscapus subsp. bakurianica | Arnol'di, 1970b | 1842 | w.q.m. | GEORGIA | |
| Myrmica pisarskii | Radchenko, 1994j | 208, figs. 1-12 | w.q.m. | RUSSIA (Siberia), MONGOLIA |