| Acronym | Definition |
|---|
| APOP➣Authenticated Post Office Protocol |
| APOP➣Association for Pet Obesity Prevention (est. 2005) |
| APOP➣Authentication Post Office Protocol (Qualcomm) |
| APOP➣Advanced Purchase Order Processing |
| APOP➣Advanced Product Quality Planning |
| APOP➣Authorized Patient Online Purchasing (physician service) |
| APOP➣Alternate Point of Presence (telecommunications) |
| APOP➣Automated Program Operating Plan |