| Acronym | Definition |
|---|
| BRN | Brunei (ISO Country code) |
| BRN | Brown |
| BRN | Berne, Switzerland - Belp (Airport Code) |
| BRN | Board of Registered Nursing |
| BRN | Business Referral Network (various locations) |
| BRN | Big Results Now (Tanzania) |
| BRN | Bott Radio Network |
| BRN | Branch Never |
| BRN | Bulk Richardson Number (meteorology) |
| BRN | Business Registration Number |
| BRN | Branch Line (railroad) |
| BRN | Business Ready Networks |
| BRN | Bastille-République-Nations (French political publication) |
| BRN | Belgian Recycle Network |
| BRN | Béton Rationnel Normand (French concrete company) |
| BRN | Black Router Network |
| BRN | Backbone Relay Network |
| BRN | Bordereau de Références Nominatives (French: Statement of Registered References; finance) |
| BRN | Bubba Radio Network, Inc |