sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Scottish Public Sector Ombudsman | ** |
| Stichting Psycho Sociale Opleidingen | ** |
| Synthetic Protein Sequence Oversampling | ** |
| SAVER Program Support Office | ** |
| Science Proposal Support Office | * |
| South Pacific Subregional Office | * |
| SPACE Participating States Organisations | * |
| State Procurement and Support Operations | * |
| Stephan Pola String Orchestra | * |
| Student Personnel Services Officer | * |
| Scottish Public Services Ombusman | * |
| School Psychology Student Organization | * |
| Science Program Selection Office | * |
| Senior Personnel Staff Officer | * |
| Senior Principal Scientific Officer | * |