| BG | Bag | |
| BG | Background | |
| BG | Beige | |
|
| B/G | Boy/Girl | |
| BG | Bulgaria (International Auto Identification) | |
| BG | Being | |
| BG | Bowling Green (Kentucky, Ohio) | |
| BG | Board Game | |
| BG | Bangladesh | |
| BG | Burg | |
| BG | Belgrade (Serbia) | |
| BG | Bass Guitar | |
| BG | Blood Glucose (medical) | |
|
| BG | Body Guard | |
| BG | Bill Gates | |
| BG | Botanical Garden | |
| B/G | Back Glass | |
| BG | Baldur's Gate (game) | |
| BG | Bubble Gum | |
| BG | Birthday Girl | |
| BG | Black Gangsta | |
| BG | Boston Globe (newspaper) | |
| BG | Berufsgenossenschaft (German: professional association) | |
| BG | Burial Grounds | |
| BG | Business Group | |
| BG | Be Good | |
| BG | Ben Gay | |
| BG | Bhagavad Gita | |
| BG | Bomb Group | |
| BG | Big Girl | |
| BG | Bride Groom | |
| BG | Brigadier General | |
| BG | Battle Group | |
| BG | Bombardment Group | |
| BG | Bloodhound Gang (band) | |
| BG | Below Ground | |
| BG | Ben Gurion | |
| BG | Buffalo Grove (Chicago, IL suburb) | |
| BG | Big Grin | |
| B/G | Background (cinematography) | |
| BG | Bowling Green State University | |
| BG | Bank Guarantee | |
| BG | Busch Gardens (amusement park) | |
| BG | Battle Ground (Washington) | |
| BG | Battleground | |
| BG | Blind Guardian (band) | |
| BG | Barge | |
| BG | Beautiful Girl | |
| BG | Bezirksgericht (Court of Justice; Austria, Europe) | |
| BG | Box Girder (structure) | |
| BG | Boring Game | |
| BG | Bad Guy | |
| BG | Blackstone Group | |
| BG | Bee Gees (Brothers Gibb, band) | |
| BG | Block Group | |
| BG | Bundesgymnasium (School; Austria, Europe) | |
| BG | Bevel Gear (automation) | |
| BG | Bad Girl | |
| BG | Bundesgericht (German: Federal Supreme Court; Switzerland) | |
| BG | Basal Ganglia | |
| BG | British Gas PLC | |
| BG | British Guiana | |
| BG | Bioglass (NovaBone Products, LLC) | |
| BG | Blood Gas | |
| BG | Bunge Ltd. (stock symbol) | |
| BG | Bilderberg Group | |
| BG | Bill Goldberg (WWE Wrestler) | |
| BG | Bubble Guts | |
| BG | Booster Gold (superhero) | |
| BG | Bord Gais (gas supply company in Ireland) | |
| BG | Bus Grant | |
| BG | Border Gateway (3GPP) | |
| BG | Bad Game (gaming slang) | |
| BG | O6-Benzylguanine | |
| BG | Brigade General | |
| BG | Billions of Gallons | |
| BG | Bezahlt Geld | |
| BG | Bergamo, Lombardia (Italian province) | |
| BG | Bene Gesserit (Dune) | |
| BG | Beautiful Game (gaming) | |
| BG | Back Grinding | |
| BG | Big Generator (album by Yes) | |
| BG | Buffalo Grass | |
| BG | Beech Grove | |
| BG | Blue Gender (anime) | |
| BG | Beer Goggles (band) | |
| BG | Battle Gear (arcade racing video game series) | |
| BG | Budget Guidance | |
| BG | Begane Grond (Dutch: ground floor) | |
| BG | Before Google | |
| BG | Bacillus Globigii | |
| BG | Beach Group | |
| BG | Basisgruppe | |
| BG | Backup Generator | |
| BG | Baby Gangsta (band) | |
| BG | Bangladesh Biman (airline code) | |
| BG | Blind Gossip (website) | |
| BG | Band Geek | |
| BG | Blood Gulch (gaming) | |
| BG | Bis Gleich (German: be right back) | |
| BG | Bump & Grind | |
| BG | Beautiful Garbage (band Garbage's 3rd album) | |
| BG | Battery Ground | |
| BG | Bacillus Subtilis Var Niger (biological warfare agent simulant) | |
| BG | Before Guild (gaming date, Dune) | |
| BG | Before Guild (science fiction, Dune) | |
| BG | Blue Gauntlet (sport fencing supplier, New Jersey) | |
| BG | Bomberman Generation (video game) | |
| BG | Birmingham Gauge (wire) | |
| BG | Barangay Ginebra (Philippines) | |
| BG | Bubble Ghost (game) | |
| BG | Bancada Guatemala (Guatemala political party) | |
| BG | Beygir Gucu (Turkish: Horse Power) | |
| Bg | Gas Shrinkage Factor (hydrocarbon physical properties) | |