HSM

HSM is a three-letter acronym that may refer to:

• Harakat al-Shabaab Mujahedeen, a Somali insurgent group
• Hardware security module
• Health Systems Management
• Hepatosplenomegaly
• Hierarchical storage management
• Hierarchical state machine
• High School Musical (film series)
  • High School Musical, first film
  • High School Musical, the soundtrack to the first film
  • High School Musical (disambiguation), other uses
• High Speed Machining
• Holy Spirit Movement
• HSM, the IATA code for Horsham Airport, in Australia
• Molde University College (Høgskolen i Molde)
• Hyper Sonic Motor, Sigma's trade name for photo lens focusing technology using ultrasonic motor
• Hollandsche IJzeren Spoorweg-Maatschappij, a now defunct railway company in the Netherlands, and predecessor of the Nederlandse Spoorwegen.