| Acronym | Definition |
|---|
| FNN➣Feed-Forward Neural Network (semiconductors) |
| FNN➣Finance News Network (Australia) |
| FNN➣Financial News Network |
| FNN➣Fuzzy Neural Network |
| FNN➣Fox News Network |
| FNN➣Fédération Française de Naturisme (French: French Federation of Naturism) |
| FNN➣Fédération Nationale des Négociants en Bois (French: National Federation of Wood Traders; Belgium) |
| FNN➣Flat Neighborhood Network |
| FNN➣Full National Number (all digits of a telephone number) |
| FNN➣Farmer and Nature Net |
| FNN➣Fundación Nicaragua Nuestra (Spanish: Our Foundation Nicaragua) |
| FNN➣Funkeln Nagel Neu (band) |
| FNN➣Future Network News |