NISM
| Acronym | Definition |
|---|---|
| NISM | National Institute of Securities Markets (Mumbai, India) |
| NISM | Need I Say More |
| NISM | Neural Inverse Space Mapping |
| NISM | National Internet Safety Month |
| NISM | Navigare in Internet sul Mare (Italian: Surfing the Internet at Sea; conference) |
| NISM | National Inline Speedskating Meet (Singapore) |