OBN
| 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 |