As of 2018, Formica contains at least 290 extant species and 59 extinct species.

Species include:
Formica aquilonia Yarrow, 1955
†Formica biamoensis Dlussky, Rasnitsyn & Perfilieva, 2015
Formica cinerea Mayr, 1853
Formica creightoni Buren, 1968
Formica cunicularia Latreille, 1798
Formica dirksi
Formica exsecta Nylander
Formica exsectoides
Formica fusca Linnaeus, 1758 (F. (Serviformica) fusca)
Formica gagatoides Ruzsky, 1904
Formica incerta  Emery, 1893
Formica japonica Motschoulsky, 1866
Formica lemani Bondroit
Formica lugubris Zetterstedt, 1838
Formica obscuripes Forel, 1886
Formica pacifica
†Formica paleosibirica Dlussky, Rasnitsyn & Perfilieva, 2015
Formica pallidefulva Latreille, 1802
Formica podzolica
Formica polyctena
Formica pratensis Retzius
Formica rufa Linnaeus, 1761
Formica rufibarbis Fabricius, 1793
Formica sanguinea
Formica subintegra Wheeler, 1908
Formica talbotae Wilson, 1977
Formica transkaucasica Nasonov
Formica truncorum Fabricius, 1804
Formica uralensis Ruzsky, 1895
As of 2018, Formica contains at least 290 extant species and 59 extinct species.
Species include:
Formica aquilonia Yarrow, 1955
†Formica biamoensis Dlussky, Rasnitsyn & Perfilieva, 2015
Formica cinerea Mayr, 1853
Formica creightoni Buren, 1968
Formica cunicularia Latreille, 1798
Formica dirksi
Formica exsecta Nylander
Formica exsectoides
Formica fusca Linnaeus, 1758 (F. (Serviformica) fusca)
Formica gagatoides Ruzsky, 1904
Formica incerta  Emery, 1893
Formica japonica Motschoulsky, 1866
Formica lemani Bondroit
Formica lugubris Zetterstedt, 1838
Formica obscuripes Forel, 1886
Formica pacifica
†Formica paleosibirica Dlussky, Rasnitsyn & Perfilieva, 2015
Formica pallidefulva Latreille, 1802
Formica podzolica
Formica polyctena
Formica pratensis Retzius
Formica rufa Linnaeus, 1761
Formica rufibarbis Fabricius, 1793
Formica sanguinea
Formica subintegra Wheeler, 1908
Formica talbotae Wilson, 1977
Formica transkaucasica Nasonov
Formica truncorum Fabricius, 1804
Formica uralensis Ruzsky, 1895
Formica