| BAC | Basic Access Control [engl.] |
| BAM | Basic Access Method [engl.] |
| BTAM | Basic Telecommunications Access Method [IBM] [engl.] |
| BDAM | Basic Direct Access Method [engl.] |
| DBAM | Directory Basic Access Method [engl.] |
| BFAS | Basic File Access System [engl.] |
| BCAM | Basic Communication Access Method [engl.] Basiszugriffsverfahren bei Kommunikationssystemen |
| BSAM | Basic Sequential Access Method [engl.] |
| BCS | Basic Control System [engl.] |
| BCM | Basic Control Memory [engl.] |
| vbx | Custom Control [Visual Basic / Dialogelement] eine Dateiendung |
| ACU | Access Control Unit |
| DAC | Discretionary Access Control |
| MAC | Mandatory Access Control |
| AC | Access Control [engl.] Zugriffssteuerung |
| TAC | Terminal Access Control[ler] |
| PAC | Player Access Control |
| EAC | Extended Access Control |
| ACS | Access Control System [engl.] |
| RSBAC | Rule Set Based Access Control |
| FACL | Full Access Control List |
| PACE | Priority Access Control Enabled |
| RBAC | Role Based Access Control |
| EFAC | Extended File Access Control |
| MACS | Modem Access Control System |
| MACF | Mandatory Access Control Framework |
| ACI | Access Control Information [engl.] Aus X.500-Standard |
| RACF | Resource Access Control Facility [IBM] |
| CBAC | Context Based Access Control |
| DACL | Discretionary Access Control List |
| ACL | Access Control List [engl.] Sicherheitsbestandteil des LDAP |
| PBNAC | Port Based Network Access Control |
| VACM | View-based Access Control Model |
| ACP | Access Point Control Protocol [engl.] Bereich Funk-LANs |
| IAMCE | ISDN Access Module Control Element |
| DAVACS | DoE Automated Visitor Access Control System |
| TACAS | Terminal Access Controller Access System |
| VB | Visual Basic |
| bas | Basic [engl.] Dateinamen-Erweiterung für Programme in Basic |
| au | Audio-Basic-File eine Dateiendung |
| snd | Sound-File-Basic eine Dateiendung |
| BSS | Basic Service Set [engl.] |
| VBS | Visual Basic Script |
| BU | Basic Unit [engl.] Kerneinheit von Geräten oder Anlagen |
| IBSS | Independent Basic Service Set |
| MBP | Major Basic Protein |
| BPP | Basic Printing Profile |
| BSSID | Basic Secure Set Identifier [engl.] Verschlüsselungssystem |
| BER | Basic Encoding Rules [engl.] |
| BDN | BASIC Developer Network [engl.] |