DTM

In sport:

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

In computing:

• Deterministic Turing machine, an abstract symbol-manipulating device that was first described in 1936 by Alan Turing
• Digital terrain model, a digital representation of ground-surface topography or terrain
• 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 (disambiguation), original comics as well as TV series, films and video games based on them
• Detroit Techno Militia, a collective of techno DJs and Musicians in Michigan.
• DTM stands for desktop music, an English term originating from Japan, roughly meaning Computer Music.

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

In transportation:

• Dortmund Airport, an international airport in Germany