sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| and protocol supporting organization | *** |
| Asylum Pre Screening Officer | ** |
| Asia Pacific Security Outlook | ** |
| Agency for Personnel Services Overseas | ** |
| Army Personnel Survey Office | ** |
| Association of Personnel Services Organisations | ** |
| Andhra Pradesh State Office | ** |
| Arab Persian Student Organization | ** |
| Association of Personnel Services Organisation | ** |
| Agency for Personnel Service Overseas | ** |
| Armed Public Security Officer | ** |
| Association of Personnel Service Organizations | ** |
| adjustable protrusion surface obstacle | ** |
| Aboriginal Program Support Officers | * |
| Adequate Public Schools Ordinance | * |
| Alabama Power Service Organization | * |
| Asian Pacific Student Outreach | * |
| Armed Public Safety Officer | * |
| Asia Pacific Socialist Organization | * |
| Air Power Support Organization | * |
| All Pakistan Students Organisation | * |
| Austin Pet Sitters Organization | * |
| Administrative and Programme Services Officer | * |
| Assistant Protective Service Officer | * |
| Association of Personnel Services Organization | * |
| Association for the Physical Sciences of the Ocean | * |
| Association of the Physical Sciences of the Ocean | * |