| 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) |