HZS
| Acronym | Definition |
|---|---|
| HZS | Hogere ZeevaartSchool (Dutch type of maritime academy) |
| HZS | Hrvatski Zrakoplovni Savez (Croatian Aeronautical Federation) |
| HZS | Hasseltse Zwemvereniging Spartacus (Dutch: Flemish Swimming Federation) |
| HZS | Hasicsky Zachranny Sbor (Czech: Fire Brigade) |
| HZS | Honolulu Zoo Society (est. 1969; Honolulu, HI) |
| HZS | Hellenic Zoological Society (est. 1980; Athens, Greece) |