USM

USM may stand for:

General topics

 * Samui Airport, in Thailand (IATA airport code)
 * Ultimate Soccer Manager
 * Ultimate Spider-Man
 * Ultrasonic motor, the motor drive used in some Canon EF and EF-S lenses
 * Union of Monaco Trade Unions (Union des Syndicats de Monaco)
 * United States Marines
 * United States of Mexico
 * United States Military
 * United States Mint
 * United States of Mind, a studio album by the band Covenant
 * Unlisted Securities Market
 * Unsharp masking, an image processing method
 * United Socialist Movement, UK, 1934-1965
 * Ultrasonic machining

Computing

 * Universal Storage Media – a type of devices that, when connected to a computer, show up as storage devices without the need for additional drivers
 * Universal Storage Module – a new standard for cableless plug-in slot-powered storage for consumer electronics devices
 * User-based Security Model – a security standard for the Simple Network Management Protocol (SNMP)
 * Universal Subscription Mechanism – a protocol for the Rich Site Summary (RSS) standard

Universities

 * University System of Maryland
 * University School of Milwaukee
 * University of Santa Monica
 * Universiti Sains Malaysia, Penang, Malaysia
 * University of Southern Maine
 * University of Southern Mindanao, Philippines
 * University of Southern Mississippi
 * Federico Santa María Technical University (also known as UTFSM or USM)