Elleth Deo
- Full Name: NFN Deo
- Species: Betazoid
- Gender: Female
- By August 2376: Ensign, pilot, Starfleet; USS Hood (SCE Short Story: "Enigma Ship")
- Mid-August 2376: Ensign, beta shift conn officer, Starfleet; USS da Vinci (SCE Short Story: "Enigma Ship", "Wildfire, Book 2")
- Death: September 25, 2376; USS da Vinci (SCE Short Story: "Wildfire, Book 2")
- Killed in Galvan VI incident (SCE Short Story: "Wildfire, Book 2")