Commander T'Reth was a female Romulan officer during the Dominion War.

In 2375, she commanded the IRW Draco which housed the Reman battalion commanded by Shinzon. When the Draco was ordered to Goloroth to drop the battalion for action against Dominion forces there T'Reth was ordered to kill all the Remans after they were successful in battle. Before she could carry out these orders the Remans mutinied and took over the Draco, killing T'Reth in the process. (ST short story: "Twilight's Wrath")