HLD
- Dresden High Magnetic Field Laboratory
- Duan language (Austroasiatic)
- Heavy-Light Decomposition
- Hellifield railway station
- Henderson Land Development
- High-level design
- Highland (council area)
- Hoek van Holland Haven railway station
- Hold (baseball)
- Holdrege (Amtrak station)
- Homeland defense
- Hulunbuir Hailar Airport
- Hyper Light Drifter
- Hyperlipidemia