HSM or H.S.M. may refer to:

Entertainment

Organisations

Harakat al-Shabaab Mujahedeen Harakat al-Shabaab al-Mujahideen (HSM; ar, حركة الشباب المجاهدين, translit=Ḥarakat ash-Shabāb al-Mujāhidīn, so, Xarakada Mujaahidiinta Alshabaab, ), more commonly known as al-Shabaab, is an Islamic fundamentalist Sala ...

or Al-Shabaab, a Somali insurgent group *

Hollandsche IJzeren Spoorweg-Maatschappij The Hollandsche IJzeren Spoorweg-Maatschappij () or HSM (''Hollands Iron Railway-Company'') was the first railway company in the Netherlands founded on 8 August 1837 as a private company, starting operation in 1839 with a line between Amsterdam ...

, a former Netherlands railway *

Holy Spirit Movement The Holy Spirit Movement (HSM) is a spiritual/religious movement and Ugandan rebel group centered around founder Alice Lakwena (Auma) and the spirits that possessed her. Alice, an ethnic Acholi, was purportedly directed to form the HSM by Lakwena ...

, Uganda * HSM (company), an American company (previously Hickory Springs)

Science and technology

Hardware security module A hardware security module (HSM) is a physical computing device that safeguards and manages secrets (most importantly digital keys), performs encryption and decryption functions for digital signatures, strong authentication and other cryptogr ...

, a physical computing device *

Hepatosplenomegaly Hepatosplenomegaly (commonly abbreviated HSM) is the simultaneous enlargement of both the liver (hepatomegaly) and the spleen (splenomegaly). Hepatosplenomegaly can occur as the result of acute viral hepatitis, infectious mononucleosis, and his ...

, 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 Hierarchical storage management (HSM), also known as Tiered storage, is a data storage and Data management technique that automatically moves data between high-cost and low-cost storage media. HSM systems exist because high-speed storage devices, ...

, in data storage * Hierarchical state machine, in computer science * Hyper Sonic Motor, Sigma

ultrasonic motor An ultrasonic motor is a type of piezoelectric motor powered by the ultrasonic vibration of a component, the stator, placed against another component, the rotor or slider depending on the scheme of operation (rotation or linear translation). Ultras ...

lens focusing technology

Other uses

Historic Sites and Monuments in Antarctica A Historic Site or Monument (HSM) is a protected location of historic interest on the continent of Antarctica, or on its adjacent islands. The list of historic sites was first drawn up in 1972,

* Horsham Airport, Australia, by IATA code *

Humanitarian Service Medal The Humanitarian Service Medal (HSM) is a military service medal of the United States Armed Forces which was created on January 19, 1977 by President Gerald Ford under . The medal may be awarded to members of the United States military (includ ...

, a U.S. military award {{Disambiguation