ISWI
| Acronym | Definition |
|---|---|
| ISWI | International Space Weather Initiative |
| ISWI | International Student Week in Ilmenau (Germany) |
| ISWI | Interactive Systems Worldwide, Inc. (est. 1995; New Jersey) |
| ISWI | I Stand with Israel |
| ISWI | Ikatan Sarjana Wanita Indonesia (Indonesian: Indonesian Women Scholars Association) |
| ISWI | International Sports Wagering, Inc. (Nevada) |