BESL
| 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) |