The Omega system was a star system located in the space of the galaxy's Alpha or Beta Quadrants. It was the location of at least seven planets, including Omega III, (TOS comic: "The Flight of the Buccaneer") Omega IV (TOS episode: "The Omega Glory") and the seventh planet, Holberg 917G. (TOS episode: "Requiem for Methuselah", ST reference: Star Trek Maps)
- According to Stellar Cartography: The Starfleet Reference Library: Federation Historical Highlights, 2161-2385 this system was located in the Beta Quadrant, in the vicinity of Starbase 105 and the Archer system.
- According to the The Explored Galaxy map first seen in "Conspiracy" and on multiple occasions since, there were two Omega systems, so it is possible that not all of these worlds are found in the same Omega system.
- Omega system primary (star)