The Ssi-ruuk Star Cluster, also known as the Ssi-Ruuvi Cluster was a star cluster in the Unknown Regions which contained the Ssi'kaat system. The nearest planet not under Ssi-ruu control was Bakura, which they later invaded. Moments after the invasion, Gaeriel Captison sent a distress signal to New Republic and Imperial forces.
- The Truce at Bakura (First mentioned)
- The New Jedi Order: Force Heretic II: Refugee (First appearance)