| APOP | A Piece Of Property 
| Others |
| APOP | Accelerating Progress in Obesity Prevention
| Others |
| APOP | Acoustic Properties Of Plankton
| Others |
| APOP | Acutely Presenting Older Patient
| Others |
| APOP | Advanced Post Office Protocol
| Others |
| APOP | Alternate Point Of Presence
| Others |
| APOP | Annual Piece Of Paper
| Others |
| APOP | Anthropology Public Outreach Program
| Others |
| APOP | Approved Paint On Parts
| Others |
| APOP | Asian Professionals of Portland
| Others |
| APOP | Associate Provost for Outreach Programs
| Others |
| APOP | Association for Pet Obesity Prevention
| Others |
| APOP | Association of Pet Obesity Prevention
| Others |
| APOP | Association pour les Applications Pedagogiques de l'Ordinateur au Postsecondaire
| Others |
| APOP | Authentic Post Office Protocol
| Others |
| APOP | Authenticated Post Office Protocol
| Others |
| APOP | Authentication Post Office Protocol
| Others |
| APOP | Automatic Particle Orientation Procedure
| Others |