| Acronym | Definition |
|---|
| HKS | Harvard Kennedy School (John F. Kennedy School of Government at Harvard University; Cambridge, MA) |
| HKS | Herz Kreislauf System (German: Cardiovascular System) |
| HKS | Hong Kong Section (various organizations) |
| HKS | Hrvatski Košarkaški Savez (Croatian Basketball Federation) |
| HKS | Hong Kong Standard |
| HKS | Hrvatski Konjicki Savez (Croatian Equestrian Federation) |
| HKS | Hrvatski Kuglacki Savez (Croatian Pin Bowling Federation) |
| HKS | Hrvatski Karate Savez (Croatian Karate Federation) |
| HKS | Silver Hake |
| HKS | Hasegawa, Kitagawa, Sigma (automotive performance products) |
| HKS | Hibbit, Karlsson & Sorenson Inc |
| HKS | Hrvatski Kineziološki Savez (Croatian Kinesiological Federation) |
| HKS | Hrvatski Kajakaški Savez (Croatian Canoe Federation) |
| HKS | Hrvatski Kickboxing Savez (Croatian Kickboxing Federation) |
| HKS | Homing and Kill Stage |
| HKS | Hrvatski Klizacki Savez (Croatian Skating Federation) |