| Acronym | Definition |
|---|
| MFN | Most-Favored-Nation |
| MFN | Music For Nations (British independent record label; UK) |
| MFN | Metromedia Fiber Network |
| MFN | Master File Number |
| MFN | Minefinders Corporation Ltd (stock symbol) |
| MFN | Masculine Feminine Neuter (gender) |
| MFN | Miles from Nowhere |
| MFN | Milford Sound, New Zealand (Airport Code) |
| MFN | Multi Frequency Network |
| MFN | MusicalFans.net (website) |
| MFN | Money For Nothing |
| MFN | Master File Notification (computing) |
| MFN | Master File Notification Message (computing) |
| MFN | Marsalforn (postal locality, Malta) |
| MFN | Matawa First Nations (Canada) |
| MFN | Mississippi Food Network |
| MFN | Main Frogans Network |
| MFN | Mini-Fiber Node |
| MFN | Metropolitan Fiber Network (NextLink) |
| MFN | Mantrafreenet (free internet service in India) |