Lethra Hanno was a female Cardassian and the niece of Jagul Hanno.
In 2362, Lethra engaged in a relationship with Laen Enkoa that led to his promotion by Hanno, who believed that marrying off his niece would make Enkoa easier to control. This engagement was called off soon after because of Enkoa's attack on Setlik III and his subsequent dishonor. (ST novella: The Slow Knife)
- Lethra's last name was never mentioned in the story, but since she is the daughter of Hanno's brother, it is implied that Lethra's name is also Hanno.