BCSU
| Acronym | Definition |
|---|---|
| BCSU | Buckinghamshire Chilterns Students Union (UK) |
| BCSU | Blood Component Separation Unit |
| BCSU | Bangladesh Cha Sramik Union (Bangladeshi labor union) |
| BCSU | Black Cougar Shock Unit |
| BCSU | Board Configuration Switching Unit |
| BCSU | Bridgwater College Student Union (Somerset, England, UK) |
| BCSU | Business College of Shanxi University (China) |