| Acronym | Definition |
|---|
| BESL➣Bamberg Engineering Sound Lab (est. 1993; Sandwich, IL) |
| BESL➣Brooks Energy and Sustainability Lab |
| BESL➣British Empire Service League (now Royal Canadian Legion) |
| BESL➣Briggs Environmental Services Ltd. (UK) |
| BESL➣Belgian Elite Sports League (online gaming) |
| BESL➣Bangkok Exhibition Services Limited (tradeshow organizer; Bangkok, Thaiand) |