UFN
| Acronym | Definition |
|---|---|
| UFN | Ultimate Fight Night (gaming) |
| UFN | Unbalanced Feistel Network |
| UFN | Until Further Notice |
| UFN | User Friendly Naming |
| UFN | Underground File Network |
| UFN | Underground Fragging Network (gaming leagues) |
| UFN | Universal Fighting Network |
| UFN | Union des Forces Nouvelles (French: Union of New Forces; Cameroon and Senegal) |
| UFN | Uspekhi Fizicheskih Nauk (Russian scientific magazine; est 1918) |
| UFN | United Florist Network (New York, NY) |
| UFN | Undecided for Now |