| Abbreviation | Definition |
|---|---|
| ISDCL | International Society for Deuterocanonical and Cognate Literature |
| ISEL | Interests Skills Experience and Language |
| ISH | ~ish: Used when someone is looking for an approximate answer. As in, how longish would you cook it |
| ISL | IDV Scripting Language |
| ISL | Indigo Shader Language |
| ISL | Interface Specification Language |
| ISLA | Immersion for Spanish Language Acquisition |
| ISLE | Interdisciplinary Studies in Literature and Environment |
| ISLE | International Standard For Language Engineering |
| ISLE | International Standards for Language Engineering |
| ISLP | Innovative Speech and Language Pathology |
| ISLR | Interpreting and Sign Language Resources |
| ISLS | International Society for Language Studies |
| ISLS | International Summer Language School |
| ISML | Information Systems Modeling Language |
| ISML | Interface Specification Meta Language |
| ISPL | Incremental System Programming Language |
| ITHL | Institute for the Translation of Hebrew Literature |
| ITL | Interchange Tag Language |
| ITL | Interpreted Test Language |