| OFN | Document (MS Office) 
| Others |
| OFN | Objective Field Number
| Others |
| OFN | Octopus Freight Network
| Others |
| OFN | Ocular Field Number
| Others |
| OFN | Office File New
| Others |
| OFN | Offroad Fabrication Network
| Others |
| OFN | OFN French Nannies
| Others |
| OFN | Oklahoma Family Network
| Others |
| OFN | Old F***ing News
| Others |
| OFN | Old Folks Night
| Others |
| OFN | Older Feminist Network
| Others |
| OFN | Omniscient Fire Narrator
| Others |
| OFN | On Farm Network
| Others |
| OFN | One For Neal
| Others |
| OFN | Online Friends Network
| Others |
| OFN | Ontario Federation of Naturalists
| Others |
| OFN | Ontario Fishing Network
| Others |
| OFN | Open File Name
| Others |
| OFN | Open Financial Network
| Others |
| OFN | Open Food Network
| Others |
| OFN | Operation Feed the Nation
| Others |
| OFN | Opp Finance Network
| Others |
| OFN | Opportunity Finance Network
| Others |
| OFN | Optical Fiber Network
| Others |
| OFN | Optical Fiber Non-conductive
| Others |
| OFN | Optical Fiber Nonconductive
| Others |
| OFN | Optical Fiber Nonconductive Optical Fiber Nonconductive
| Others |
| OFN | Optical Finger Navigation
| Others |
| OFN | Oregon Federation News
| Others |
| OFN | Oregon Flora Newsletter
| Others |
| OFN | Oregon Folklife Network
| Others |
| OFN | Organization of Free Nations
| Others |
| OFN | Ottawa Freecycle Network
| Others |
| OFN | Ourlads Football Network
| Others |
| OFN | Out for Now
| Others |
| OFN | Outdoor Furniture Nederland
| Others |
| OFN | Oxygen Free Nitrogen
| Others |