In sport:

• Deutsche Tourenwagen Masters, a motor racing series staged annually in Germany from 2000
• Deutsche Tourenwagen Meisterschaft, a motor racing championship staged in Germany from 1984 to 1995

In computing:

• Deformable Template model
• Deterministic Turing machine, an abstract symbol-manipulating device that was first described in 1936 by Alan Turing
• Device Type Manager
• Digital terrain model, a digital representation of ground surface topography or terrain
• Digital Typing Machine, a typing machine invented in the late 1970s that allowed the rapid typing of both the 1 and 0 digits
• Discrete multitone modulation, an ADSL modulation method
• Driver Test Manager, a test automation framework provided by Microsoft as a part of Windows Driver Kit (WDK)
• Dual Transfer Mode, supporting simultaneous voice and packet data in a GSM network
• Dynamic synchronous Transfer Mode, a networking technology

In media

• Dennis the Menace, original comic as well as TV series, films and video games based on it

In demography:

• Demographic transition model, a model used to represent the changes in birth and death rates of a country

In certification:

• Distinguished Toastmaster, a certification of Toastmasters International

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