HSM

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