Romulan faith
- Major religion polytheistic, largely inherited from Vulcan faith
- Titles
- Emperor (Novel: Articles of the Federation)
- Spiritual leader of the religion (Novel: Articles of the Federation)
- Archpriest (Short Story: "Blood Sacrifice"; Novel: Articles of the Federation)
- Emperor (Novel: Articles of the Federation)
- Gods
- Akraana
- Female (ENT Novel: To Brave the Storm)
- Bettatan'ru
- Possibly a god of death or divine punishment (ENT Novel: To Brave the Storm)
- Dwells in Areinnye with Erebus (ENT Novel: To Brave the Storm)
- D'ravsai
- The "Great Brothers" (ENT Novel: Beneath the Raptor's Wing)
- Possibly the inspiration for the English names of Romulus and Remus?
- Erebus
- Associated with fire (ENT Novel: The Good That Men Do)
- Possibly a god of death or divine punishment (ENT Novel: To Brave the Storm)
- Dwells in Areinnye with Bettatan'ru (ENT Novel: To Brave the Storm)
- T'Karik
- Conjectural (used in epithet "T'Karik's balls") (ENT Novel: Beneath the Raptor's Wing)
- T'Vet (ENT Novel: To Brave the Storm)
- Akraana
- Afterlife beliefs
- Halls of Erebus a place of reward (TTN Novel: Taking Wing)
- Areinnye a place of punishment in the afterlife for the dishonorable (ENT Novel: To Brave the Storm)
- Described as "cold"
- Not considered a "hell" apparently, as "Romulans have no hell" (TNG Novel: Death in Winter)
- Klingon individual characterizes them as having nine "Hells" per Taking Wing; unclear contradiction
- Titles