HRM may refer to:

• Ḥ-R-M, a Semitic root
• Croatian Navy (Croatian: Hrvatska ratna mornarica)
• Halifax Regional Municipality, Nova Scotia, Canada
• Harrietsham railway station, England, station code
• Hassi R'Mel Airport, Algeria, IATA code
• Heart Rhythm Meditation
• Hermes Airlines, a Greek airline, ICAO code
• High-reactivity metakaolin, used in cement
• High resolution manometry, a medical diagnostic system
• High Resolution Melt, in molecular biology
• His or Her Royal Majesty
• Horned Miao language, spoken in China, ISO 639-3 code hrm
• Horsham railway station, Victoria, Australia, station code
• HRM, a Rockwell scale of materials' hardness
• Human Race Machine, a computerized console
• Human resource management