| Abbreviation | Definition |
|---|---|
| BE | Battlefield Earth |
| BEE | Bio-Engineered Extraterrestrial |
| BEM | Bug Eyed Monster |
| BF | Blade Fury |
| BFB | Battle for BFDI |
| BFS | Bar Fleet Ship |
| BFS | Besthorpe Fantasy Society |
| BG | Baldurs Gate |
| BGM | Big Green Men |
| BHK | Blonde Haired Kid |
| BIBLE | Basic Interplanetary Bible Learning Expedition |
| BIO | Biomechanical Integrated Organism |
| BIOT | BIological robOT |
| BITT | Biomagically Influxed Transdimensional Traveler |
| BIV | Brain In a Vat |
| BKA | Backwards Knee Alien |
| BL | Boy's Love |
| BLL | Blade Lord Lyn |
| BLOR | Bloodsport League Of Rune |
| BMP | Body Modification Project |