HSM or H.S.M. may refer to:
Entertainment High School Musical (disambiguation)
Organisations Harakat al-Shabaab Mujahedeen or Al-Shabaab, a Somali insurgent group Hollandsche IJzeren Spoorweg-Maatschappij, a former Netherlands railway Holy Spirit Movement, Uganda HSM (company), an American company (previously Hickory Springs)
Science and technology Hardware security module, a physical computing device Hepatosplenomegaly, enlargement of the liver and the spleen Hierarchical Storage Manager, an IBM program Product for MVS and a component of Data Facility Storage Management Subsystem/MVS Hierarchical storage management, in data storage Hierarchical state machine, in computer science Hyper Sonic Motor, Sigma ultrasonic motor lens focusing technology
Other uses Historic Sites and Monuments in Antarctica Horsham Airport, Australia, by IATA code Humanitarian Service Medal, a U.S. military award
See also HMS (disambiguation)