| Abbreviation | Definition |
|---|---|
| ACNS | Aptech Certified Network Specialist |
| ACO | Aircraft Certification Offices |
| ACOP | Associate Certified Outsourcing Professional |
| ACP | Acceptance (Test) Procedure |
| ACP | Agile Certified Practitioner |
| ACP | Autodesk Certified Professional |
| ACPA | Association of Certified Public Accountants |
| ACPAE | Association of Certified Public Accountants in |
| ACPP | Allot Certified Product Professional |
| ACR | Alien Certificate of Registration |
| ACRS | Apple Certification Records System |
| ACRU | Appliance Certificate Renewal Utility |
| ACRW | Academy Certified Resume Writer |
| ACS | Airman Certification Standards |
| ACS | Airmen Certification Standards |
| ACSA | Apple Certified System Administrator |
| ACSA | Aruba Certified Switching Associate |
| ACSE | Advanced Certificate in Supported Employment |
| ACSE | AlienVault Certified Security Engineer |
| ACSEP | Aircraft Certification Services Evaluation Program |