| BSEC | Bangladesh Securities and Exchange Commission 
| Others |
| BSEC | Bangladesh Steel and Engineering Corporation
| Others |
| BSEC | Bangladesh Steel Engineering Corporation
| Others |
| BSEC | Base Structure Evaluation Committee
| Others |
| BSEC | Basic Surgical Education Committee
| Others |
| BSEC | Belfast Software Engineering Centre
| Others |
| BSEC | Best Source Electronics Corporation
| Others |
| BSEC | BHIVE Startup and Entrepreneur Community
| Others |
| BSEC | BHIVE Startup Entrepreneur Community
| Others |
| BSEC | Bihar State of Export Corporation
| Others |
| BSEC | Bio System Energy Collector
| Others |
| BSEC | Bio-ethics Society of the English-speaking Caribbean
| Others |
| BSEC | Biomedical Sciences Engineering and Computing
| Others |
| BSEC | Birmingham South East Consortium
| Others |
| BSEC | Black Sea Economic Cooperation
| Others |
| BSEC | Black Sea Economics Cooperation
| Others |
| BSEC | Boeing Simplified English Checker
| Others |
| BSEC | Boyle Street Education Centre
| Others |
| BSEC | Brazil Solar Energy Conference
| Others |
| BSEC | Brooklyn Society for Ethical Culture
| Others |
| BSEC | Building Schools Exhibition and Conference
| Others |
| BSEC | Building Supervisor for Emergency Conditions
| Others |
| BSEC | Building Supervisors for Emergency Conditions
| Others |
| BSEC | Business Student Executive Council
| Others |