| Acronym | Definition |
|---|
| QSN➣Quit Smoking Now |
| QSN➣Quadro Strategico Nazionale (Italian: National Strategic Framework; Ministry of Economic Development; Italy) |
| QSN➣Quality Strategy Network (UK) |
| QSN➣Quality Screw & Nut Co. |
| QSN➣I Heard You (radiotelegraphy) |
| QSN➣Queue Sequence Number |