| Acronym | Definition |
|---|
| OFN | Optic Fiber Network |
| OFN | Organization for Flora Neotropica |
| OFN | Opportunity Finance Network |
| OFN | Office File New |
| OFN | Open File Name |
| OFN | Oregon Folklife Network (Eugene, OR) |
| OFN | Optical Finger Navigation |
| OFN | Operation Feed the Nation (Nigeria) |
| OFN | Oxygen Free Nitrogen |
| OFN | Ottawa Fullcircles Network (Ottawa, Canada) |
| OFN | Open File Name (Windows programming) |
| OFN | Open Finance Network |
| OFN | Out for Now (chat) |
| OFN | Ontario Fishing Network |
| OFN | Ottawa Freecycle Network (Ottawa, Canada) |
| OFN | Old Freaking News (polite form) |
| OFN | Other Forces for NATO |