ISWA
| 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) |