| Acronym | Definition |
|---|
| ISWA➣International Solid Waste Association |
| ISWA➣International Science Writers Association (est. 1967) |
| ISWA➣Indiana State Wrestling Association |
| ISWA➣Islamic Society of the Washington Area (Silver Spring, MD) |
| ISWA➣International Submission Wrestling Association |
| ISWA➣In Solidarity with Animals (Texas) |