- Carraya IV (Carraya system) (likely outside of actual Romulan territory)
- Chaltok IV (Chaltok system)
- Remus (Romulan system)
- Romulus (Romulan system)
- Unnamed Minshara class planet
- Since the expansion of the Romulan Star Empire is most likely based upon conquest and not the peaceful admission of single planets, we may assume that, if one planet is Romulan, the whole system may be seized by the Star Empire, too.
Stars and star systems
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