| ICSD | Improved Customer Service Delivery 
| Others |
| ICSD | Infocomm Security Department
| Others |
| ICSD | Information and Communication Services Division
| Others |
| ICSD | Information and Communications Services Development
| Others |
| ICSD | Inorganic Crystal Structure Database
| Others |
| ICSD | Inter Class Standard Deviation
| Others |
| ICSD | International Center for Sustainable Development
| Others |
| ICSD | International Central Securities Depository
| Others |
| ICSD | International Classification of Sleep Disorders
| Others |
| ICSD | International Committee of Sports for the Deaf
| Others |
| ICSD | International Conference on Conduction & Breakdown in Solid Dielectrics
| Others |
| ICSD | International Conference on Sustainable Development
| Others |
| ICSD | International Consortium for Social Development
| Others |
| ICSD | Inverse Current Source Density
| Others |
| ICSD | Ionisation Chamber Smoke Detector
| Others |
| ICSD | Iron County School District
| Others |
| ICSD | Islamic Center of San Diego
| Others |
| ICSD | Ithaca City School District
| Others |