| Abbreviation | Definition |
|---|---|
| BLCA | Briggs Lake Chain Association |
| BLGA | Baby Leaf Growers Association |
| BLGA | Bayville Ladies Golf Association |
| BLHA | Balsam Lake Homeowners Association |
| BLHA | Berkeley Lake Homeowners Association |
| BLIA | Ballston Lake Improvement Association |
| BLIA | Buddha's Light International Association |
| BLIA | Bulgarian Library and Information Association |
| BLLA | Boutique and Lifestyle Lodging Association |
| BLLA | Boutique Lifestyle Leaders Association |
| BLLA | Boutique Lifestyle Lodging Association |
| BLLA | Boutique Lodging Lifestyle Association |
| BLLA | British Luggage and Leathergoods Association |
| BLLA | Brookline Little League Association |
| BLMA | British Lock Manufacturers Association (UK) |
| BLMA | Brookline Library Music Association (Brookline, MA) |
| BLMC | British Leather-goods Manufacturers Association (UK) |
| BLMO | BLMO Coin |
| BLOA | Business Licensing Officials Association |
| BLPA | Belize Livestock Producers Association |