The Omicron Theta system was a star system in Federation space. A planet in this system, Omicron Theta, provided a home for colonists from Earth in the early 24th century. Twice in the late 2330s, this colony suffered from the depradations of the Crystalline Entity. There were a few survivors, among them Dr. Noonien Soong and Data. (TNG: "Datalore")
- Omicron Theta (primary)
- Omicron Theta colony (planet)
- Moon 1
- Moon 2
- Omicron Theta colony (planet)