| Formica caustica Kollar, 1832 |
| Formica cephalotes Linnaeus, 1758 |
| Formica chelifera Latreille, 1802 |
| Formica cinerea Mayr, 1853 |
| Formica cinerea var. altipetens Wheeler, 1913 |
| Formica coeca Latreille, 1802 |
| Formica conspicua Smith, 1858 |
| Formica coronata Fabricius, 1804 |
| Formica corusca Smith, 1862 |
| Formica cuneata Perty, 1833 |
| Formica curvidentata Latreille, 1802 |
| Formica densiventris Viereck, 1903 |
| Formica discolor Buckley, 1866 |
| Formica edax Forskål, 1775 |
| Formica fervens Drury, 1782 |
| Formica festinata Buckley, 1866 |
| Formica filiformis Fabricius, 1804 |
| Formica flammiventris Wheeler, 1912 |
| Formica flavipes Geoffroy, 1785 |
| Formica foetida Linnaeus, 1758 |