
| Company name | Primary business area | Primary coverage | |
|---|---|---|---|
| Adax Business Systems W.L.L. | CCTV | Qatar | |
| AxxonSoft GmbH | Software | Germany | |
| 1st American Investigative Agency | Digital video recording | United States of America (USA) | |
| 24/7 Close Protection Ltd | Physical security | United Kingdom (UK) | |
| 247 Group | Biometrics | South Africa | |
| 3rd Eye Surveillance Systems | Digital video recording | United States of America (USA) | |
| 3VR Security Inc. | Searchable Surveillance | United States of America (USA) | |
| 4Site Online Ltd. | Integrated security | Western Europe | |
| Aarya Ites Pvt. Ltd. | CCTV | India | |
| AB Security | CCTV | United Kingdom (UK) | |
| Abiom | Communicators | Netherlands | |
| Able Security Concepts Ltd | Manned guarding | United Kingdom (UK) | |
| Absolute Security Ltd. | CCTV | Kenya | |
| Accent Alarms, Inc | CCTV | North America | |
| Access Control SA | Access control | South Africa | |
| Acropolis Electronic Security Systems. | Integrated security | India | |
| ACUMEN Int. Corp | CCTV | Taiwan | |
| ACUSTEK Ltd | Biometrics | United Kingdom (UK) | |
| Adaar Technology | Integrated security | India | |
| ADB Alarms Ltd | Intruder alarm | United Kingdom (UK) | |
| ADEN Services | Physical security | China | |
| ADi security and surveillance | CCTV | United Kingdom (UK) | |
| Aditech Infotech Pvt. Ltd. | Biometrics | India | |
| Advance Peripheral Systems Ltd | Intruder alarm | United Kingdom (UK) | |
| Advanced Security Developments | CCTV | United Kingdom (UK) | |
| Advanced Security Systems | IP networking products | Mexico | |
| After Surveillance Security Distribution | Digital video recording | United States of America (USA) | |
| AGI Security | Digital video recording | United States of America (USA) | |
| Alarm King Inc. | CCTV | United States of America (USA) | |
| ALCO Security | Intruder alarm | United Kingdom (UK) | |



