| Acronym | Definition |
|---|
| BES | BlackBerry Enterprise Server |
| BES | Blackberry Enterprise Solution |
| BES | Basic Energy Sciences |
| BES | Banco Espirito-Santo (Espirito-Santo Bank, Portugal) |
| BES | Banco Espírito Santo |
| BES | Baltimore Ecosystem Study |
| BES | Biomedical and Environmental Sciences (est. 1988; journal) |
| BES | Brest Bretagne (airport code; Brittany, France) |
| BES | Business Ethernet Switch (Nortel) |
| BES | Bureau of Employment Services (various locations) |
| BES | Business Exchange Services |
| BES | Back End Server |
| BES | Bursty Errored Seconds |
| BES | Boolean Equation Systems |
| BES | British Ecological Society |
| BES | Borland Enterprise Server |
| BES | Building Excellent Schools (Boston, MA) |
| BES | Bureau of Environmental Services |
| BES | Business and Economics Statistics (various organizations) |
| BES | Bem Estar Subjetivo (Portuguese: Subjective Well-Being) |
| BES | Business Expectations Survey (various locations) |
| BES | Business Expansion Scheme |
| BES | Bireysel Emeklilik Sistemi (Turkey) |
| BES | Basic Execution Service (computing) |
| BES | Behavioral Science |
| BES | Bayer Environmental Science (Bayer CropScience) |
| BES | Business Enterprise Support (UK) |
| BES | Bioengineering and Environmental Systems |
| BES | Biomedical Engineering Society |
| BES | Budget Estimate Submission |
| BES | British Election Study |
| BES | Surabaya Stock Exchange |
| BES | Book Entry System (securities) |
| BES | Business Enterprise System (various locations) |
| BES | Basic Educational Skills (various locations) |
| BES | Beijing Spectrometer (China) |
| BES | Bachelor of Environmental Studies |
| BES | Binge Eating Scale |
| BES | Broadcast Engineering Society (India) |
| BES | Battle Encoder Shirase |
| BES | British Epigraphy Society (UK) |
| BES | Business Education Series (various locations) |
| BES | Building Environmental Systems |
| BES | British Endodontic Society |
| BES | BAC End Sequencing |
| BES | Back-End Services |
| BES | Business Enterprise Scotland |
| BES | Bioelectrochemical Society |
| BES | British Election Studies |
| BES | Beach Elementary School (Maryland) |
| BES | Brest, France - Guipavas (Airport Code) |
| BES | Bowen Electrical Services (UK) |
| BES | Business Entity Search |
| BES | Busch East Series (NASCAR) |
| BES | Broadcast Engineering Services (Malaga, Washington) |
| BES | Boulder Emergency Squad (Colorado) |
| BES | Black Engineers Society |
| BES | Bioengineering & Environmental Systems |
| BES | British Electrophoresis Society |
| BES | Business Expenses Survey |
| BES | Bureau of Epidemiology Services (New York) |
| BES | Babler Elementary School (Wildwood, MO) |
| BES | By Easy Stages (France) |
| BES | Bristol Elementary School (New Hampshire) |
| BES | Bioenvironmental Engineering Services |
| BES | Busy Energy-Signal |
| BES | Boutique Eat Shop (New York; restaurant) |
| BES | Battlefield Equestrian Society (Virginia) |
| BES | Bearing Engineering Services (Australia) |
| BES | Backscatter Electron Signal |
| BES | Business Evaluation Services |
| BES | Backhaul Extension Services (UK) |
| BES | British Educational Suppliers |
| BES | Bureau of Engineer Surveyors (UK) |
| BES | Battlefield Effects Simulator (US Army) |
| BES | Bose-Einstein Statistics |
| BES | Belgian Ergonomics Society |
| BES | Bridgewater Elementary School (Nova Scotia) |
| BES | Block Environmental Services (California) |
| BES | Beaufort Elementary School (South Carolina) |
| BES | Business Education Standards |
| BES | Blue Express Services (Okinawa, Japan) |
| BES | Bellville Electrical Suppliers (South Africa) |
| BES | Bursty Errored Second (digital line performance measure) |
| BES | Budget Execution System |
| BES | Business Ethics Society |
| BES | Brownstown Elementary School (Illinois) |
| BES | Beaufort Engineering Services (Fairhope, AL) |
| BES | Balanced Electrolyte Solution |
| BES | Business Enterprise Services |
| BES | Bachelor of Engineering Science |
| BES | Bilan Energétique Simplifié (French: Simplified Energy Balance) |
| BES | Bates Elementary School (Utah) |
| BES | Bureau des Etudiants en Sciences (French: Office of Science Students) |
| BES | Bulk Electricity System |
| BES | Building Emergency Staff |
| BES | Boardwalk Enterprise Spreadsheet |
| BES | Background Environment Simulator |
| BES | Bayside Elementary School (Maryland) |
| BES | Bankruptcy and Enforcement Strengthening |
| BES | Bridge Erection Set |
| BES | Budget Estimate Summary |
| BES | Blountstown Elementary School (Florida) |
| BES | Bachelor of Electronic Science |
| BES | Blade Edge Software |
| BES | Broadcast and Electronic Solutions Ltd (Ireland) |
| BES | Basehor Elementary School (Kansas) |
| BES | Bridgnorth Endowed School (UK) |
| BES | Batch Execution System (application) |
| BES | Büro Emekçileri Sendikas (Turkey) |
| BES | Bethel Springs Elementary (Tennessee) |
| BES | Burtonsville Elementary School (Maryland) |
| BES | Buffer Execute Status |
| BES | Building Expense System |
| BES | Basket en Segala (French: Basketball Segala; Segala, Midi-Pyrenees, France) |
| BES | Bowden Elementary School (Georgia) |
| BES | Base Earth Station |
| BES | Bachelor of Educational Studies |
| BES | Budget End Strength |
| BES | Bickerdyke Elementary School (Kansas) |
| BES | Boost's Entertainment System |
| BES | Business English Services (various organizations) |
| BES | Bachelor of Environment Studies |
| BES | Brookdale Elementary School |
| BES | Battlefield Execution Summary |
| BES | Bobcat Excavation Service (Cincinnati, Ohio) |
| BES | Binictican Elementary School (Subic Bay, Philippines) |
| BES | Beyond Emergency Services |
| BES | Blodgett Elementary School (Oregon) |