| IsA |
Interstitial Acute |
| ISA |
Independent Safety Assessor |
| ISA |
Interim Stowage Assembly |
| ISA |
International Seabed Authority |
| ISAC |
Immune System Activation Of Coagulation |
| ISAF |
International Security Assistance Force |
| ISAM |
Information Security Awareness Month |
| ISAMS |
Improved Stratospheric And Mesospheric Sounder |
| ISAS |
Institute of Space and Astronautical Science |
| ISB |
International Society of Biometeorology |
| ISBE |
International Society of the Built Environment |
| ISBM |
Injection Stretch Blow Molding |
| ISBP |
International Society of Breast Pathology |
| ISBT |
Inter State Bus Terminus |
| ISBT |
International Society For Blood Transfusion |
| ISBZ |
IsoStearyl BenZoate |
| ISC |
Interface Select Code |
| ISC |
Ignore System Crash |
| ISC |
Interconnect Standard Consortium |
| ISC |
Independent Search Consultant |
| ISC |
Interstellar Space Craft |
| ISC |
Initial Software Configuration Map |
| ISC |
International Seismological Center |
| ISCC |
Inter-Society Color Council |
| ISCC |
Information System to Support Calibrations |
| ISCCP |
International satellite Cloud Climatology Project |
| ISCCP |
International Satellite Cloud Climate Project |
| ISCO |
International Society for Cellular Oncology |
| ISCO |
Innermost Stable Circular Orbit |
| ISCO |
International Standard Classification of Occupations |
| ISCON |
Indian Steel Construction Company |
| ISCS |
International Space Communications System |
| iSCSI |
Internet Small Computer System Interface |
| iSCSI |
Internet Small Computer Systems Interface |
| ISD |
International Subscriber Dialling |
| ISD |
Intrinsic Sphincter Deficiency |
| ISD |
Instructional Systems Development |
| ISD |
Independent School District |
| ISD |
Information Services Division |
| ISD |
Investment Services Directive |
| ISD |
Information Storage Device |
| ISD |
Income Support Division |
| ISD |
Imperial Star Destroyer |
| ISD |
Internal Security Division |
| ISD |
Individual Soldier Detector |
| ISD |
Industrial Support Detachment |
| ISD |
Interface State Density |
| ISD |
Improved Standard Driver |
| ISD |
Instructional Support Department |
| ISDL |
International Sustainable Development Law |