| Acronym | Definition |
|---|
| OPN➣Oneohtrix Point Never (recording alias) |
| OPN➣Ora Pro Nobis (Latin: Pray for Us) |
| OPN➣Open |
| OPN➣Osteopontin (protein) |
| OPN➣Optics & Photonics News (Optical Society of America) |
| OPN➣Oracle PartnerNetwork |
| OPN➣Ojcowskiego Parku Narodowego (Polish: Paternal National Park) |
| OPN➣Open Partial Nephrectomy |
| OPN➣Outrage Performance Monitoring |
| OPN➣Office Productivity Network |
| OPN➣Open Projects Network |
| OPN➣Oracle Partner Network |
| OPN➣Open Presence Network |
| OPN➣Ordering Part Numbers |
| OPN➣Ordering Part Number |
| OPN➣Ojcowski Park Narodowy (Polish: Ojców National Park) |
| OPN➣Other Procurement, Navy |
| OPN➣Open Projects Network (IRC Network) |
| OPN➣On Purpose Networking (Ginny Robertson) |
| OPN➣Orderable Part Number |
| OPN➣Optical Packet Node |
| OPN➣Operational Processing Centers |
| OPN➣Open Parlor Night |