| Abkürzung | Bereich | Staat | Bedeutung |
| b | Physik | D | Breite |
| BAPT | Amt | D | Bundesamt für Post- und Telekommunikation |
| BASIC | Software | Beginner's All Purpose Symbolic Instruction Code (Programmiersprache) | |
| BASM | Software | Built-In Assembler | |
| BBC | Firma | GB | British Broadcasting Company |
| BCE | Gesellschaft | CAN | Bell Canada Enterprises |
| BCPL | Software | Bell Canada Enterprises | |
| berufs. | Allgemein | D | berufserfahren |
| BFD | Person | D | Bundesbeauftragter für Datenschutz |
| BFT | Computer | Binary File Transfer | |
| BIPS | Technik | Billions of instructions per second (Milliarden von Instruktionen pro Sekunde) | |
| BISYNC | Computer | Binary Synchronous Communication Protocol | |
| BIT | Computer | Binary Digit | |
| BIU | Computer | Bus Interface Unit | |
| BKS | Verband | D | Bundesverband Kabel & Satellit |
| BKSP | Computer | Backspace | |
| BLER | Computer | Block Error Rate | |
| BLERT | Computer | Block Error Rate Test | |
| BMFT | Ministerium | D | Bundesministerium für Forschung und Technologie |
| BMPT | Ministerium | D | Bundesministerium für Post und Telekommunikation |
| BMW | Firma | D | Bayerische Motorwerke |
| BO | Computer | Binary Output | |
| BOM | Computer | Beginning of Message | |
| BOP | Computer | Bit Oriented Protocol | |
| BOT | Computer | Beginning of Table | |
| Technik | Beginning of Tape | ||
| BP | Software | Base Pointer | |
| BPB | Computer | BIOS Parameter Block | |
| BPI | Computer | Bits per Inch | |
| BPS | Computer | Bits per Second | |
| BR | Computer | Bad Register | |
| D | Befehlsregister | ||
| BRD | Staat | Bundesrepublik Deutschland | |
| BS | Computer | Backspace | |
| BSC | Computer | Binary Synchronous Communication | |
| BSF | Computer | Bit Scan Forward | |
| BSI | Institut | GB | British Standards Institution |
| Normung | |||
| BSR | Computer | Bit Scan Reverse | |
| BSYNC | Computer | Binary Synchronous Communications | |
| BT | Gesellschaft | GB | British Telecom |
| BTI | Firma | GB | British Telecom International |
| BTR | Computer | Bit Test and Reset | |
| BTS | Computer | Bit Test and Set | |
| BTX | Technik | D | Bildschirmtext |
| BWM | Computer | Block Write Mode | |
| bzgl. | Allgemein | D | bezüglich |
| bzw. | Allgemein | D | beziehungsweise |