NFN Duffy
- Full Name: NFN Duffy
- Species: Human
- Gender: Male
- Potentially at least one brother (SCE Short Story: "Wildfire, Book 2")
- Uncle of Kieran not described as paternal or maternal
- Son: Kieran Duffy
- Daughter: Amy Duffy
- Death: c.2359 (SCE Short Story: "Wildfire, Book 2")