| APOS | A Piece of Sh 
| Others |
| APOS | A Positive blood type
| Others |
| APOS | Accountability Pillar Online Survey
| Others |
| APOS | Acoustic positioning operating station
| Others |
| APOS | Acoustic Positioning Operator Station
| Others |
| APOS | Action Process Object and Schema
| Others |
| APOS | Action Process Object Schema
| Others |
| APOS | Actions Process Objects Schemas
| Others |
| APOS | Actions Processes Objects And Schemas
| Others |
| APOS | Actions Processes Objects Schemas
| Others |
| APOS | Advanced Process Oriented Steering
| Others |
| APOS | After Point Of Sale
| Others |
| APOS | After Point of Sales
| Others |
| APOS | Alberta Professional Outfitters Society
| Others |
| APOS | All Phases of Step
| Others |
| APOS | All Phases of the Step
| Others |
| APOS | Allocation at the Point of Substitution
| Others |
| APOS | American Psycho Oncology Society
| Others |
| APOS | American Psychosocial Oncology Society
| Others |
| APOS | Andhra Pradesh Ophthalmic Society
| Others |
| APOS | Arizona Prosthetic Orthotic Services
| Others |
| APOS | Asian Pacific Orthodontic Society
| Others |
| APOS | At the Point Of Substitution
| Others |
| APOS | Atlantic Prosthetic Orthotic Services
| Others |