| Abbreviation | Definition |
|---|---|
| FAMN | Física Atómica Molecular y Nuclear |
| FANC | Federal Agency for Nuclear |
| FANC | Federal Agency for Nuclear Control |
| FANC | Federal Agency of Nuclear Control |
| FANR | Functional Analysis of Nuclear Reorganisation |
| FBNR | Fixed Bed Nuclear Reactor |
| FCDN | Fundacion Centro Diagnostico Nuclear |
| FDND | Fukushima Daiichi Nuclear Disaster |
| FMNC | Facial Motor Nuclear Complex |
| FMNS | Fusion and Materials for Nuclear Systems |
| FNKB | factor nuclear kappa B |
| FNR | Ford Nuclear Reactor |
| FNS | Finite Nuclear Size |
| FNST | Fusion Nuclear Science and Technology |
| FPND | Fission Product Nuclear Data |
| FUNT | French Underground Nuclear Test |
| GAIN | Gateway for Accelerated Innovation in Nuclear |
| GANA | Global Anti Nuclear Alliance |
| GANE | Georgians Against Nuclear Energy |
| GCNF | Germ Cell Nuclear Factor |