NFN McFadden
- Full Name: NFN McFadden
- Species: Human
- Gender: Male
- Cadet, Starfleet Academy; security track
- Cross-trained in engineering
- By March 2266: Ensign, security officer, Starfleet; USS Enterprise (TOS Novel: Errand of Vengeance: The Edge of the Sword)
- Death: March 17, 2266; USS Enterprise (TOS Novel: Errand of Vengeance: The Edge of the Sword)
- Died in surgery following injuries received in Orion attack, FGC-1324 IV (TOS Novel: Errand of Vengeance: The Edge of the Sword)