The Unroth system was a planetary system in the Romulan Star Empire, home to a Romulan colony. The system's primary was named Unroth. It was located in the Beta Quadrant. In late 2375, the Breen military leader Thot Gor observed that the colony's long-range sensor array was being repaired, leaving them vulnerable to attack. This insight had previously eluded Dominion strategists. (DS9: "Strange Bedfellows"; DIS: "Magic to Make the Sanest Man Go Mad")