| Acronym | Definition |
|---|
| BCG | Boston Consulting Group |
| BCG | Birchip Cropping Group |
| BCG | Board for Certification of Genealogists |
| BCG | Bacillus of Calmette and Guerin (tuberculosis vaccine; trademark of Institut Pasteur, Paris, France) |
| BCG | Ballistocardiogram |
| BCG | Bolt Carrier Group (firearms) |
| BCG | Bromcresol Green |
| BCG | Birth Control Glasses (military eyeglasses) |
| BCG | Brightest Cluster Galaxy |
| BCG | Business Conduct Guidelines |
| BCG | British Chelonia Group |
| BCG | Bilié de Calmette et Guérin (French: Bacillus Calmette-Guerin; tuberculosis vaccine) |
| BCG | Bi-Conjugate Gradient |
| BCG | Baroque Choral Guild |
| BCG | Bay Consulting Group (Toronto, ON, Canada) |
| BCG | Belgisch Centrum voor Geleidehonden vzw |
| BCG | British Conference Grants |
| BCG | Bath Consultancy Group (UK) |
| BCG | Big Coupe Group (online car club) |
| BCG | Biota Concentration Guide (ecological safety) |
| BCG | Bureau de Contrôle Girondin (French: Control Office Girondin; est. 1998) |
| BCG | Bulk Call Generator |
| BCG | Bicolor Guaiac Test |
| BCG | Bingham Calnan Group |
| BCG | Bioinformatics & Computational Genomics |
| BCG | Building Controls Group (UK standardization authority) |
| BCG | Business Center Group |
| BCG | Bakalian Consulting Group |
| BCG | Blackclaw Games |
| BCG | Broadband Convergence Gateway |
| BCG | Benefits Connection Group |
| BCG | Big Cheesy Grin |
| BCG | Biological Crystal Growth |
| BCG | Badminton Club de Gien (Gien, France) |
| BCG | Biblical Church of God |
| BCG | Buller Caving Group (caving club in New Zealand) |
| BCG | Buffalo Creek & Gauley Railroad |
| BCG | Brumlik Consulting Group (San Clemente, CA) |
| BCG | Brand Clear Glue |
| BCG | Boot Camp Glasses |
| BCG | Best Companies Group (Harrisburg, PA) |
| BCG | Billy Casper Golf (various locations) |
| BCG | British Consulate-General (UK) |
| BCG | British Comedy Guide (website; UK) |