| Acronym | Definition |
|---|
| HLW➣Herz Lungen Wiederbelebung (German: Cardiopulmonary Resuscitation) |
| HLW➣High Level Waste |
| HLW➣How Language Works |
| HLW➣High Low Water (same as LW neaps) |
| HLW➣Honeder Lacher Wallner (Austria; software and web design firm) |
| HLW➣Hybrid Large White (turkeys) |