Demographic transition model, a theory within the field of overpopulation

Deterministic Turing machine, an abstract symbol-manipulating device that was first described in 1936 by Alan Turing

Discrete multitone modulation, an ADSL modulation method

Direct to metal, a type of paint used for application on metal surfaces

Desktop music, music produced using computer technology. This acronym is mainly used in Japan.

Distinguished Toastmaster, a postnominal for people granted the Distinguished Toastmaster award from Toastmasters International

Digital terrain model, a digital representation of ground surface topography or terrain

Dynamic synchronous Transfer Mode, a networking technology

Degtyarev DTM Soviet machine gun, a version of the Degtyaryov light machine gun

Driver Test Manager, a test automation framework provided by Microsoft as a part of Windows Driver Kit (WDK)

Dermatophyte Test Medium, a specialized agar used in medical mycology

Dortmund Airport (IATA: DTM, ICAO: EDLW)

Deutsche Tourenwagen Masters (since 2000), formerly Deutsche Tourenwagen Meisterschaft (until 1996), German Touring Car Championship

Dual Transfer Mode, supporting simultaneous voice and packet data in a GSM network