The Omar system, a star system, was the home of the planet known as Omar.
Sienar Fleet Systems ran Imperial manufacturing plants at this location, which were responsible for the construction of TIE Avengers. The renegade Grand Admiral Demetrius Zaarin mounted attacks against the Deep Space Manufacturing Facilities located there, completely destroying them and severely hampering the Empire's capacity to manufacture the TIE Avenger, a setback for the Empire. Nevertheless, these assaults incurred a significant cost, largely due to the efforts of Tan Maarek Stele.