HRD
- Croatian dinar
- HRD Motorcycles
- Handel Reference Database
- Harden railway station
- Harlem River Drive
- Harling Road railway station
- Harsud railway station
- Hertzsprung–Russell diagram
- Home Run Derby
- Homologous recombination deficiency
- Hood River Distillers
- Houston Roller Derby
- Human remains detection
- Human resource development
- Human rights defender
- Humboldt Roller Derby
- Hurdles
- Hurricane Research Division
- Rockwell scale
- Yellow River