DT: Digital Television (used in TV callsign) DT: Displacement Transducer: DT: Doing Time: DT: Domain Theory: DT: Double Time (on overtime forms) DT: Double Torsion: DT: Double-Throw (switch) DT: Downtime: DT: Driver Training: DT: Detoxification: DT: Deuterium-Tritium: DT: Development Type: DT: Diphtheria-Tetanus (vaccination) DT: Drive Tire: DT: Dialog Telekom PLC (Sri Lanka) DT: Direct TV: DT: Drunk Tank: DT: Dragon Tails (webcomic)