| Abbreviation | Definition |
|---|---|
| ABC | American Board for Certification |
| ABCB | Association of British Certification Bodies |
| ACAR | Al's Certified Auto Repair |
| ACBC | Association of Certified Biblical Counselors |
| ACC | Associate Certified Coach |
| ACCA | Associate Chartered Certified Accountant |
| ACCA | Association of Certified Chartered Accountants |
| ACCA | Association of Chartered Certified Accountant |
| ACET | Alternative Certification for Effective Teachers |
| ACI | ASHI Certified Inspector |
| ACI | Avid Certified Instructor |
| ACPACI | Association of Certified Public Accountants in Commerce and Industry |
| ACPACI | Association of Certified Public Accountants in Commerce Industry |
| ACPAE | Association of Certified Public Accountants in Education |
| ACPAPP | Association of Certified Public Accountants in Public Practice |
| ACPM | Agile Certified Product Manager |
| ACSB | Association of Certified Sexological Bodyworkers |
| ACTC | Apple Certified Technical Coordinator |
| ADD | Authorized Diamond Dealer |
| AFOCE | Application for Certificate of Eligibility |