- For other uses, see T'nag.
T'nag was an old enemy of the legendary Klingon warriors, Kor, Koloth and Kang. The three warriors once fought a glorious battle against T'nag and his force of forty legions, in which they emerged victorious. Following their victory, they killed T'nag and feasted on his heart. (DS9 episode: "The Sword of Kahless")
- In the Kelvin timeline, an individual named T'nag was a Starfleet cadet, making it a likelihood that this T'nag also served the Federation in some way in the aforementioned battles with the Klingons.