| Acronym | Definition |
|---|
| ISSI➣Integrated Silicon Solution, Inc. (San Jose, CA) |
| ISSI➣Institute of Strategic Studies, Islamabad (Pakistan) |
| ISSI➣Inter Switching System Interface |
| ISSI➣International Space Science Institute |
| ISSI➣International Society for Scientometrics and Informetrics (Belgium; est. 1993) |
| ISSI➣Islamic State of Syria & Iraq |
| ISSI➣Inter-Switching System Interface |
| ISSI➣International Society for Self and Identity |
| ISSI➣International Society for Skin Imaging (Bochum, Germany) |
| ISSI➣International Summer Science Institute (Weizmann Institute, Israel) |
| ISSI➣Internet Security Systems Inc. |
| ISSI➣Individual Short Subscriber Identity (Terrestrial Trunked Radio) |
| ISSI➣IBM Standard Software Installer |
| ISSI➣Inter-RF Sub-System Interface |
| ISSI➣Institute of Social Sciences Information |
| ISSI➣Industrial Supply Solutions, Inc. (Salisbury, NC) |
| ISSI➣Integrated Silicon Solution, Incorporated |
| ISSI➣Insight Software Solutions, Inc. |
| ISSI➣International Scattering Society, Inc. (ash scattering company) |