OIN
| Acronym | Definition |
|---|---|
| OIN | Open Invention Network |
| OIN | Output or Input |
| OIN | Opérations d'Intérêt National (French: Operations of National Interest) |
| OIN | Originator's Identification Number (direct debit identification number) |
| OIN | Outer Info Network (advertising supported software) |
| OIN | Other Items Net |
| OIN | Office for Immigration and Nationality (Hungary) |
| OIN | Otaniemi International Network (Finland) |
| OIN | Organization of Imperial Nations (Cyber Nations alliance) |
| OIN | Orona Innovation Network (Spain) |