FSZ
| Acronym | Definition |
|---|---|
| FSZ | Shizuoka (airport code; Japan) |
| FSZ | Free Speech Zone |
| FSZ | Farmland Security Zone (California farmland preservation legislation; est. 1998) |
| FSZ | Flyers Skate Zone (ice skating facilities; New Jersey and Pennsylvania) |
| FSZ | Fractional Shortening Z-Score (cardiology) |