Demo may refer to:

• Demo (music), a song recorded for reference rather than release
• Technology demo, a prototype version of a technology product, to showcase its forthcoming ideas, performance, method or features
• Software prototyping, in particular; release of prototype versions of in-progress software
• Demoware, software that users can test in a limited fashion before buying
• Game demo, more narrowly; a freely-distributed "try-out" version of a video game, usually fully playable but incomplete
• Demo (computer programming), a non-interactive multimedia presentation, a type of digital art
• Demoscene, collectively, the digital artists who create demos
• Demo (comics), a comic book series by Brian Wood and Becky Cloonan
• DEMO, a proposed experimental nuclear fusion reactor
• Demo (techno group) (демо), a Russian techno music group
• Demo mode, a feature often found in consumer electronics, which shows the owner the features of the machine
• Demo (company), a co-developer of the ZSNES Super Nintendo emulator and the ePSXe PlayStation emulator
• Demo (marketing), a sales or marketing presentation
• An alternate term for an exhibition game in sports
• Performance of a demonstration sport
• Design and Engineering Methodology for Organisations, a business process (re)design methodology.

See also

• Demonstration (disambiguation page)
• Democide, the murder of any person or people by a government
• Democracy, a small number of related forms of government
• Demography, the statistical study of human populations
• Demolition, the tearing-down of buildings and other structures