| Acronym | Definition |
|---|
| APTC | Advance Premium Tax Credit (various locations) |
| APTC | Allow Partially Trusted Callers |
| APTC | Association of Psychology Training Clinics (national organization) |
| APTC | Adler Power Torque Clutch (Ducati motorcycles) |
| APTC | Antiplatelet Trialists' Collaboration |
| APTC | Associació del Professorat de Tecnologia de Catalunya (Technology Teachers Catalonia Spain) |
| APTC | American Property Tax Counsel |
| APTC | Asia-Pacific Trusted Infrastructure Technologies Conference |
| APTC | Appointment, Promotion and Tenure Committee (various schools) |
| APTC | Association of Publicly Traded Companies |
| APTC | Atlantic Provinces Transportation Commission (Canada) |
| APTC | Advanced Processor Temperature Control |
| APTC | Asia Pacific Trade Council (Canada) |
| APTC | Australian Pacific Technical College |
| APTC | Annual Proficiency Testing and Certification program |
| APTC | Allow Partially Trusted Caller (attribute; also seen as APTCA) |
| APTC | Authorized Certified Prometric Testing Center (Microsoft exams) |