| BES | Bachelor of Electronic Science 
| Others |
| BES | Bachelor of Engineering Studies
| Others |
| BES | Bachelor of Environmental Science
| Others |
| BES | Bachelor of Environmental Studies
| Others |
| BES | Bachelors of Environmental Studies
| Others |
| BES | Back End Scaler
| Others |
| BES | Back End Server
| Others |
| BES | Back End System
| Others |
| BES | Back end systems
| Others |
| BES | Back Extensor Strength
| Others |
| BES | Bacon Egg and Spinach
| Others |
| BES | Balanced Electrolyte Solution
| Others |
| BES | Baltimore Ecosystem Study
| Others |
| BES | Banco Espirito Santo
| Others |
| BES | Barrier Equivalent Speed
| Others |
| BES | Barrington Elementary School
| Others |
| BES | Basic Energy Sciences
| Others |
| BES | BasLee Engineering Solutions
| Others |
| BES | Battery Exchange System
| Others |
| BES | Battle Encoder Shirase
| Others |
| BES | Beaufort Engineering Services
| Others |
| BES | Beauty Enhancement System
| Others |
| BES | Beauty Enhancement Systems
| Others |
| BES | Bedroom Entertainment System
| Others |
| BES | Bernardston Elementary School
| Others |
| BES | BESonders
| Others |
| BES | Besonders Especially So
| Others |
| BES | Best Elementary School
| Others |
| BES | Best Evidence Synthesis
| Others |
| BES | Bible Educational Services
| Others |
| BES | Bill Enquiry System
| Others |
| BES | Binge Eating Scale
| Others |
| BES | Biologics Evaluation Section
| Others |
| BES | Bipolar Energy Sealing System
| Others |
| BES | Black Eye Sea
| Others |
| BES | Black Eyed Susan
| Others |
| BES | Blackberry Enterprise Server
| Others |
| BES | BlackBerry Enterprise Service
| Others |
| BES | Blackberry Enterprise Solution
| Others |
| BES | Blancpain Endurance Series
| Others |
| BES | Blossomwood Elementary School
| Others |
| BES | Board Examination System
| Others |
| BES | Boolean Equation Systems
| Others |
| BES | Borland Enterprise Server
| Others |
| BES | Brest, France
| Others |
| BES | British Ecological Society
| Others |
| BES | British Election Study
| Others |
| BES | Bro Eli Soriano
| Others |
| BES | Broadcast e-Mail System
| Others |
| BES | Broadcast Engineering Society
| Others |
| BES | Brown Eyes Soul
| Others |
| BES | Budget Estimate Submission
| Others |
| BES | Budgeted End Strength
| Others |
| BES | Building Excellent Schools
| Others |
| BES | Bulk e-Mail Sender
| Others |
| BES | Bulk e-Mail Services
| Others |
| BES | Bulk Electric System
| Others |
| BES | Bureau of Environmental Services
| Others |
| BES | Bursty Errored Seconds
| Others |
| BES | Busch East Series
| Others |
| BES | Business and Enterprise Systems
| Others |
| BES | Business Enterprise Systems
| Others |
| BES | Business Exchange Services
| Others |
| BES | Business Expansion Scheme
| Others |
| BES | Business Experience System
| Others |
| BES | Button Engine Start
| Others |