DTM may refer to:

• 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

• Data Transfer Manager, a form of autonomous peripheral operations in microcontrollers
• 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
• Digital transaction management, a category of cloud services designed to digitally manage document-based transactions
• 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

• Dermatophyte test medium, a specialized agar used to diagnose a fungal infection of the skin

• Dennis the Menace (disambiguation), various meanings relating to 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
• Desktop music (in Japanese)
• "Diamond Boy (DTM)", a song by SZA from the album Lana (2024)

• DTM, variant of the Degtyaryov machine gun for mounting and loading in armoured fighting vehicles.

• Demographic transition model, a model used to represent the changes in birth- and death-rates of a country
• Distinguished Toastmaster, a certification of Toastmasters International
• Dortmund Airport, an international airport in Germany
• DTM (nightclub), a nightclub and gay bar in Helsinki, Finland
• Distance to mate, in chess endgames