| Abbreviation | Definition |
|---|---|
| BRD | BizInt Smart Charts for Pharmaceuticals Data Transfer format |
| BRD | Eagle Layout File |
| BRD | RPG Toolkit Board Design File format |
| BRD | Winning Bridge Saved Hand |
| BRK | Fax (Brooktrout Fax-Mail) |
| BRK | Mailer REXX script (The Brake!) |
| BRL-CAD | Ballistic Research Laboratory CAD |
| BRUSH | Xerox Doodle Brush file - Bitmap graphics |
| BRV | Brick Rigs Vehicle |
| BRX | A file for browsing an index of multimedia options |
| BS1 | Game data (Apogee Blake Stone) |
| BS2 | Archive (BS2) |
| BSA | BSArc Compressed file archive |
| BSC | Compressed Apple II file archive (BINSCII) |
| BSC | Database (Source Browser) |
| BSC | Microsoft Developer Studio Browser information |
| BSC | Pwbrmake object file (MS Fortran) |
| BSF | Beckman Standard Format |
| BSP | Map (Quake) |
| BST | BiblioTex Style (BibTeX) |