| SCIU | Save the Children In Uganda
| Others |
| SCIU | Sea Containers
| Others |
| SCIU | Sea Containers, LTD.
| Others |
| SCIU | Security Camera Interface Unit
| Others |
| SCIU | Security Companies Inspection Unit
| Others |
| SCIU | Selector Control Interface Test
| Others |
| SCIU | Selector Control Interface Unit
| Others |
| SCIU | Serial Crimes Investigation Unit
| Others |
| SCIU | Serious Collision Investigation Unit
| Others |
| SCIU | Serious Crimes Investigation Unit
| Others |
| SCIU | Sink Central Intelligence Unit
| Others |
| SCIU | Space Interface Unit
| Others |
| SCIU | Spinal Cord Injuries Unit
| Others |
| SCIU | Spinal Cord Injury Unit
| Others |
| SCIU | Supply Chain Information Unit
| Others |
| SCIU | Surveillance Camera Interface Unit
| Others |
| SCIU | Synchronous Clock Insertion Unit
| Others |