| Acronym | Definition |
|---|
| BESA | British Educational Suppliers Association (UK) |
| BESA | Bond Exchange of South Africa |
| BESA | Begin-Sadat Center for Strategic Studies |
| BESA | Brain Electrical Source Analysis |
| BESA | British Earth Sheltering Association |
| BESA | Beltran Saldivar (Consulting; Mexico) |
| BESA | British Engineering Standards Association |
| BESA | Bedford Euless Soccer Association (Texas) |
| BESA | Best Efficiency Spark Advance (internal combustion engine) |
| BESA | Baccalaureates Arts (Bachelor of Arts) |
| BESA | Battery and Electric Specialists Association |
| BESA | Biomedical Engineering Students Association |
| BESA | British Engraved Stationery Association |
| BESA | Border Epidemiologic Study of Aging |
| BESA | Black Educators Student Association |
| BESA | Bakery Equipment Supplier Association |
| BESA | Batir Ensemble la Sécurité Alimentaire |
| BESA | British Ex-Services Association Inc. |
| BESA | Boeing Employees Softball Association (Washington state) |
| BESA | Basic Equipment Skills Assessment |
| BESA | Bald Eagle Sportsman's Association |
| BESA | Bromoethane Sulfonic Acid |