| Acronym | Definition |
|---|
| BIL | Brother-In-Law |
| BIL | Billion |
| BIL | Board of Industry Leaders (Consumer Electronics Association) |
| BIL | Bilateral |
| BIL | Business Logic Layer |
| BIL | Bus Interface Logic (computing) |
| BIL | Banque Internationale à Luxembourg (French: International Bank of Luxembourg; Luxembourg) |
| BIL | Band Interleaved by Line |
| BIL | Brit Insurance Limited (UK) |
| BIL | Business Impact Level |
| BIL | Basic Impulse Level (electrical power switches) |
| BIL | Base d'Informations Légales (French: Legal Information Base; est. 1987) |
| BIL | Basic Insulation Level (IEC) |
| BIL | Belgisch Instituut voor Lastechniek (Dutch: Belgian Welding Institute) |
| BIL | Banque d'Images Libres (French: Free Stock Images; Canada) |
| BIL | Budget d'Initiatives Locales (French: Budget for Local Initiatives; Canada) |
| BIL | Beginner Intermediate Lounge (est. 2003) |
| BIL | Billings, MT, USA - Billings Logan Intnl Airport (Airport Code) |
| BIL | Built-In Logic |
| BIL | Bharti Infotel Ltd |
| BIL | Battery-in-Loop |
| BIL | Business Importance Level |
| BIL | Biocon India Limited |
| BIL | Blue Indicating Light |
| BIL | Buttons International Limited (Hong Kong) |