The Omman system was a star system located within the Tion Cluster. It contained the planet Omman. By the time of the Cold War, a proxy conflict between the Sith Empire and Galactic Republic, legends told of a Tionese king who had been "buried" on a starship adrift within the system. Eventually, someone was able to calculate the starship's location, sending another individual to discover it.
- Star Wars: The Old Republic (Mentioned only)