| Abbreviation | Definition |
|---|---|
| APCA | Alliance for Physician Certification and Advancement |
| APCB | Asia Pacific Certification Board |
| APCIP | Advanced Professional Certificate in Investigative Practice |
| APDC | Advanced Professional Development Certificate |
| APID | Advanced Placement International Diploma |
| APRC | Alien Permanent Resident Certificate |
| APWCA | American Professional Wound Care Association |
| AQCS | Animal Quarantine and Certification Services |
| AQIS | Accreditation and Qualifications Information Services |
| ARCB | American Reflexology Certification Board |
| ARCT | The Associate Diploma |
| asap | Organizational Climate |
| ASCC | Activity Supervisor Clearance Certificate |
| ASCPA | Australian Society of Certified Practising Accountants |
| ASEC | Academic Scientific and Educational Certificate |
| ASN | Associate of Science in Nursing |
| ASOC | Amateur Station Operator's Certificate |
| ATCC | Anti Terrorism Clearance Certificate |
| ATCD | Apprenticeship and Trades Certification Division |
| ATCP | Alternative Teacher Certification Project |