| Acronym | Definition |
|---|
| Bln | Berlin |
| Bln | Balloon |
| Bln | Business Leadership Network (US Department of Labor) |
| Bln | Blond (hair color, motor vehicle organizations) |
| Bln | Backbone Link Node (Baystream) |
| Bln | Bankruptcy Law Network |
| Bln | Breast Lymph Node |
| Bln | Backlight Notification |
| Bln | Benalla (airport code; Australia) |
| Bln | Business Leaders Network (UK; consultancy) |
| Bln | Basic Learning Need |
| Bln | Bellefonte Nuclear Plant |
| Bln | Badminton Laëtitia Nantes (French badminton club; est. 1979) |
| Bln | Bank für Landwirtschaft und Nahrungsgueterwirtschaft (former DDR bank) |
| Bln | Building Living Neighborhoods (various organizations) |
| Bln | Broadband Local Networks (Sprint) |
| Bln | Billet Line Number |