ASM may refer to:

Codes:

• American Samoa using ISO 3166-1 alpha-3 country code
• Asmara International Airport (IATA airport code)
• Assamese language (ISO 639 language code)

Computer science:

• ObjectWeb ASM, a Java library for bytecode modification and analysis
• Abstract state machines, based on the concept of an abstract state machine in computer science
• Active shape model, a deformable contour model used in computer vision
• Algorithmic State Machine, a method for designing finite state machines
• Any-source multicast
• Assembly (demo party), a demoscene event in Finland
• Assembly language, a low-level programming language
  • The keyword to use an inline assembler in C and related languages
• Automatic Storage Management, in an Oracle database

Organisations:

• ASM Clermont Auvergne, a rugby union club based in Clermont-Ferrand, France
• ASMclothing, or Altered State of Mind, an apparel company based in Cleveland, Ohio, USA
• ASM Formule 3, a French motorsport team in the Formula Three Euroseries
• ASM International (society), formerly the American Society for Metals, a professional organization for materials scientists and engineers working with metals
• ASM International (company), a Dutch semiconductor company
• ASM Team, a Portuguese motorsport team in the Le Mans Series
• Abnormal Situation Management, a research and development consortium of companies and universities that are concerned about the negative effects of industrial plant incidents
• Academy of Sciences of Moldova
• Actuarial Society of Malaysia
• American School of Milan
• American Society of Mammalogists
• American Society for Microbiology
• American Society of Muslims
• Assotsiatsia Sovremennoi Muzyki (Association for Contemporary Music), a Russian organization for contemporary composers
• Associated Students of Madison, the student government of the University of Wisconsin- Madison

Military:

• Academy Sergeant Major, the senior warrant officer at the Australian Defence Force Academy
• Air-to-surface missile
• Anti-ship missile
• Anti-Structures Munition
• Artificer Sergeant Major, a warrant officer appointment in the British Army's Corps of Royal Electrical and Mechanical Engineers

Other:

• Acceleration Simulation Mode, a test used in automobile emissions control
• Activated sludge model, in sewage treatment
• Airspace management
• Aktueller Software Markt, a German video game magazine
• The Amazing Spider-Man, a comic book published by Marvel Comics
• Assistant stage manager, a back-stage post in theater
• Available seat miles, a financial term used in air travel circles
• Assistant Manager
• Alternating sign matrix
• Active Stability Management, the name given to the Electronic Stability Control feature found in the Gran Turismo video game series.
• Artisanal and Small-Scale Mining

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