| ISID | Idle Signal Identification 
| Others |
| ISID | Illinois Society For International Development
| Others |
| ISID | Inclusive and Sustainable
| Others |
| ISID | Inclusive and Sustainable Industrial Development
| Others |
| ISID | Indian Statistical Institute Delhi
| Others |
| ISID | Information Section Intelligence Division
| Others |
| ISID | Information Services International Dentsu
| Others |
| ISID | Initiator Session Identifier
| Others |
| ISID | Institute for Studies in Industrial Development
| Others |
| ISID | Institute for the
| Others |
| ISID | Institute for the Study of International Development
| Others |
| ISID | Integrated Service Information Display
| Others |
| ISID | Inter Services Intelligence Directorate
| Others |
| ISID | Interdisciplinary Society for International Development
| Others |
| ISID | International Ship Identification Database
| Others |
| ISID | International Society For Infectious
| Others |
| ISID | International Society For Infectious Diseases
| Others |
| ISID | International Society of Interior Designers
| Others |