This is a list including all rulers who had carried the title of emperor or who ruled over an empire through history. Some titles meaning "emperor" might not have been used in the context like "padishah" under the Kingdom of Afghanistan or "tsar" under Kingdom of Bulgaria.
| Empire | Duration | Title | See |
|---|---|---|---|
| Aztec Empire | 1375–1521 | Hueyi Tlatoani ("great ruler") | List of tlatoque of Tetzcoc o |
| Inca Empire | 1438–1533 | Sapa Inca ("only ruler") | Pre-Conquest Sapa Incas Post-Conquest Sapa Incas |
| Empire of Brazil | 1822–1889 | Imperador | List of Brazilian monarchs |
| Empire of Haiti (First) (Second) | 1804–1806 1849–1859 | Empereur | List of monarchs of Haiti |
| Mexican Empire (First) (Second) | 1822–1823 1864-1867 | Emperador |
| Empire | Duration | Title(s) | See |
|---|---|---|---|
| Ethiopian Empire | 1270–1975 | Nəgusä nägäst ("ruler of rulers") | List of Ethiopian emperors |
| Central African Empire | 1976–1979 | Empereur | Emperor Bokassa |
The unobtrusive titles used by the early Chola kings were replaced with high-sounding ones, such as chakravartigal (emperor, the equivalent of the northern chakravartin).