Cunaehr tr'Mandak
- Full name: Cunaehr NLN
- Species: Romulan
- Gender: Male
- Warp propulsion engineer in the early-to-mid 22nd century (ENT Novel: The Good That Men Do)
- Assistant to Doctor Ehrehin tr'Avrak in the Romulan Star Empire's warp seven project (ENT Novel: The Good That Men Do)
- Death: January 24, 2155; Unroth III
- Killed in the aftermath of failed warp seven experiment (ENT Novel: The Good That Men Do)