| Acronym | Definition |
|---|
| OBN➣Old Boys Network (various locations) |
| OBN➣Overseas Business Network (UK) |
| OBN➣Outcomes-Based Network (Coventry Workers' Comp Services; Florida) |
| OBN➣Off Board Navigation |
| OBN➣Oklahoma Bureau of Narcotics (Oklahoma) |
| OBN➣Oklahoma Board of Nursing |
| OBN➣Ohio Board of Nursing |
| OBN➣Open Broadcast Network (Bosnia & Herzegovina wide television network) |
| OBN➣Open Business Network |
| OBN➣Open Bibliotheek Netwerk |
| OBN➣Order of the Brown Nose |
| OBN➣Ocean Basin Narrative |