HRD

• Hertzsprung–Russell diagram, in astronomy
• Homologous recombination deficiency
• Hurricane Research Division, of the United States National Oceanic and Atmospheric Administration

• Home Run Derby, Major League Baseball
• Humboldt Roller Derby
• Houston Roller Derby
• Hurdles

• Huanghe River Delta, China; the river delta of the Yellow River
• Harlem River Drive, New York City, New York State, USA
• Harden railway station (station code HRD), New South Wales, Australia
• Harling Road railway station (station code HRD), England, UK
• Harsud railway station (station code HRD), Madhya Pradesh, India

• Croatian dinar (ISO currency code HRD), a former currency of Croatia
• Handel Reference Database
• Hood River Distillers
• HRD, a Rockwell scale of materials' hardness
• HRD Motorcycles, a British motorcycle manufacturer
• Human remains detection
• Human resource development
• Human rights defender

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