| Superkingdom | Bacteria |
| Phylum | Proteobacteria |
| Class | Alpha-proteobacteria |
| Order | Rickettsiales |
| Family | Anaplasmataceae |
| Genus | Anaplasma |
| Species | A. marginale (type species) |
| A. bovis | |
| A. caudatum | |
| A. centrale | |
| A. ovis | |
| A. phagocytophilum | |
| A. platys | |
| Not formally described: | |
| A. capra | |
| Anaplasma sp. (Omatjenne) |