Demand Side Management, actions that influence the quantity or patterns of use of energy consumed by end users

Diagnostic and Statistical Manual of Mental Disorders, a handbook that lists categories of mental disorders and the criteria for diagnosing them

Downing Street memo, the leaked minutes of a secret meeting of the United Kingdom Labour government in 2002

DEC Standard MUMPS, a version of the MUMPS programming language created by Digital Equipment Corporation

Dirty Sexy Money

Dixie Square Mall, a defunct shopping mall located in Harvey, Illinois

Delta-sigma modulation, a kind of analog-to-digital or digital-to-analog conversion

DirectShow Media, a filename extension.

Direct stiffness method, a method of structural analysis

Domain-Specific Modeling, a software engineering methodology for designing and developing IT systems

Distributed shared memory, a wide class of software and hardware implementations in which each node of a cluster has access to a large shared memory

The IATA airport code for Des Moines International Airport in Des Moines, Iowa, United States

Digital Surface Model, a topographic model of the reflected surface of the earth that can be manipulated by computer programs

Diamond-Star Motors, an automobile-manufacturing joint venture between the Chrysler Corporation and Mitsubishi Motors Corporation

DSM (company), an international chemicals company based in the Netherlands

Distinguished Service Medal (United States)

Dependency Structure Matrix, a compact, matrix representation of a system or project

Distinguished Service Medal (United Kingdom)

Distinguished Service Medal (Australia)

Doha Securities Market, the principal stock market of Qatar

Dynamic Saturation Modeling

Dynamic Spectrum Management, a technique to increase bandwidth over DSL

Device Specific Module, a part of Microsoft Windows Server storage subsystem (e.g., for hard drives).