| Apterostigma scutellare Forel, 1885 |
| Araucomyrmex Gallardo, 1919 |
| Archaeomyrmex Mann, 1921 |
| Archeatta Gonçalves, 1942 |
| Arotropus Provancher, 1881 |
| Asemorhoptrum Mayr, 1861 |
| Atopodon Forel, 1912 |
| Atopogyne Forel, 1911 |
| Atopula Emery, 1912 |
| Atta Fabricius, 1804 |
| Atta (Acromyrmex) Mayr, 1865 |
| Atta (Acromyrmex) guentheri Forel, 1893 |
| Atta (Acromyrmex) lundii Guérin-Méneville, 1838 |
| Atta (Acromyrmex) lundii var. risii Forel, 1908 |
| Atta (Atta) Fabricius, 1804 |
| Atta (Cyphomyrmex) Mayr, 1862 |
| Atta (Cyphomyrmex) rimosa Spinola, 1853 |
| Atta (Cyphomyrmex) rimosa raza atrata Forel, 1912 |
| Atta (Mycetosoritis) Wheeler, 1907 |
| Atta (Mycocepurus) Forel, 1893 |