| UCIS | U S Citizenship and Immigration Services 
| Others |
| UCIS | Ultra Compact Imaging Spectrometer
| Others |
| UCIS | Unified Coverage Interoperability Standard
| Others |
| UCIS | Unique Child International School
| Others |
| UCIS | United Commercial Insurance Services
| Others |
| UCIS | University Center for International Studies
| Others |
| UCIS | University Center of International Studies
| Others |
| UCIS | University Computing and Information Services
| Others |
| UCIS | University of Canterbury Iranian Society
| Others |
| UCIS | University of Connecticut Interpreting Services
| Others |
| UCIS | Unregulated Collective Investment Scheme
| Others |
| UCIS | Unregulated Collective Investment Schemes
| Others |
| UCIS | Utility Customer Information System
| Others |