A list of the most advanced civilizations known to Humanity.
Note: this page only lists advanced alien species, preferably around Type III. Civilizations consisting of multiple species also do not count.
Current
| Name | Homeworld | Home Galaxy |
| Bolga | Unknown | Yegassin |
| Calites | Calidium | Sombrero |
| Conqrix | Idaris | Ida Galaxy |
| Humanity | Earth | Milky Way |
| Kulkin | Unknown | Phoenix Dwarf |
| Observers | Unknown | Voyager |
| Polinian | Polini | Milky Way |
| Xa'Thins | Lo'Kira | Peleunsk |
| Xcathli | Xcathlia | Milky Way |
Extinct
| Name | Homeworld | Galaxy |
| Anera | Unknown | Milky Way |
| Archids | Unknown | Indulus |
| First Civilization | Di'hwaj (possibly) | Milky Way |
| Tsund | Unknown | Andromeda I |