| Acronym | Definition |
|---|
| SNN | Symposium on Neural Networks |
| SNN | Samenwerkingsverband Noord-Nederland |
| SNN | Science News Network |
| SNN | Shobiz Newsy News (animated podcast) |
| SNN | Special Needs Network |
| SNN | Social Networking News |
| SNN | Sanane Inc. |
| SNN | Schoolnet News Network (Canada) |
| SNN | Shannon, Ireland - Shannon (Airport Code) |
| SNN | Sarimanok News Network |
| SNN | Saskatchewan Nutraceutical Network (Canada) |
| SNN | Syndicat National des Notaires (French: National Union of Notaries) |
| SNN | Société Nautique Neuchâtel (French: Neuchâtel Boating Club; Switzerland) |
| SNN | Segmental Neural Nets |
| SNN | Science Network News (est. 1988) |
| SNN | Security News Network |
| SNN | Societea Nationala Nuclearelectrica (Romanian nuclear energy company) |
| SNN | Ship Submersible Nuclear (UK Royal Navy) |
| SNN | Syndicat et de La Corporation de La Nébuleuse Noire (French: Union and Corporation of the Black Nebula) |