| Acronym | Definition |
|---|
| OSN➣Orbit Showtime Network (TV service; United Arab Emirates) |
| OSN➣Ocular Surgery News |
| OSN➣Open Source Network |
| OSN➣Osa Network |
| OSN➣Office System Node |
| OSN➣Optical Service Network |
| OSN➣Open Storage Networking |
| OSN➣Open Systems Network |
| OSN➣Open Space Network |
| OSN➣Open Solution Network |
| OSN➣Output Sequence Number |
| OSN➣Optical Service Node |
| OSN➣Ontario Stroke Network (cardiology; Ontario, Canada) |
| OSN➣Orquesta Sinfónica Nacional (Spanish: National Symphony Orchestra; Mexico) |
| OSN➣Oregon Sports Network |
| OSN➣Oracle Social Network (software) |
| OSN➣Onion Sports Network (satirical news) |
| OSN➣Office of Special Needs |
| OSN➣Online Social Network |
| OSN➣Obras Sanitarias de la Nación (Argentina) |
| OSN➣Output Sequence Number (SWIFT) |
| OSN➣Open Services Networking (various companies) |
| OSN➣Oklahoma Sustainability Network (Oklahoma City, OK) |
| OSN➣Organic Solvent Nanofiltration |
| OSN➣On Sale Now |
| OSN➣Organizace Spojených Národù (Czech) |
| OSN➣One Stop Notification |
| OSN➣Open Software Network |
| OSN➣Oracle Supplier Network (Austin, TX) |
| OSN➣Overlay Service Network |
| OSN➣Office of the Secretary of the Navy |
| OSN➣Operations Support Network (Ericsson) |
| OSN➣Old Sinful Nature |
| OSN➣Open Studios Network (UK) |
| OSN➣Optical Star Network |
| OSN➣Output Sub-Node |
| OSN➣Order of St. Nicholas |
| OSN➣On-demand Secure Network |
| OSN➣Organ-Specific Neoantigen |
| OSN➣operating system neutrality |
| OSN➣Optical Service Network(s) (fiber optics) |