For the similarly named Gamma Quadrant star system, please see Trialus system.

The Trialas system was a star system near the Borderland, not far from Verex III. Arik Soong raised Human Augments on the planet Trialas IV, in this system in the 22nd century. (ENT: "Borderland")

According to Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), the Trialas system was located in the Beta Quadrant. The system's primary was a M-class star. In the late 24th century, it was an independent system.