- DTT stands for Dithiothreitol (cytology reagent)
- DTT stands for Digital Terrestrial Television
- DTT stands for Deloitte Touche Tohmatsu (Deloitte & Touch Global Operations)
- DTT stands for Driver Theory Test (Ireland)
- DTT stands for Degroote Trucks & Trailers (Belgium)
- DTT stands for Double Taxation Treaty
- DTT stands for Discrete Trial Training (Applied Behavior Analysis)
- DTT stands for Diffusion Tensor Tractography (radiology)
- DTT stands for Direction des Transports Terrestres (French: Department of Land Transport; various locations)
- DTT stands for Documentary Transfer Tax (real property)
- DTT stands for Développement Touristique du Territoire (French: Tourism Development Planning)
- DTT stands for Development and Transfer of Technologies (climate change; UN)
- DTT stands for Department of Teacher Training (various locations)
- DTT stands for Digital Terrestrial Transmission
- DTT stands for Dansk Teologisk Tidsskrift (Danish: Danish Theological Journal)
- DTT stands for Dry Type Transformer
- DTT stands for Demeures, Terre et Tradition (French: Homes, Land and Tradition)
- DTT stands for Detent
- DTT stands for Domestic Technology Transfer
- DTT stands for Desktop Theater (Cambridge Soundworks speakers)
- DTT stands for Direct Transfer Trip (relaying system)
- DTT stands for Direct Tension Tester
- DTT stands for Direct Trunked Transport
- DTT stands for Distance to Target
- DTT stands for D-Link Technology Trend
- DTT stands for Damoiseau Tous Terrassements (French construction firm)
- DTT stands for Dynamic Terabit Testing (Agilent)
- DTT stands for Diesel Transmission Technology
- DTT stands for Distributive Training Technology
- DTT stands for Desk Top Trainer
- DTT stands for Design Thermal Transient
- DTT stands for Difference Threshold Test
- DTT stands for Diffusion Transfer Technology
- DTT stands for Data Transfer Type
- DTT stands for Datum Temporal Token
- DTT stands for Dynamic Test Target
- DTT stands for Defense Technology Towers (Singapore)
- DTT stands for Distribution, Transformation and Trading (Arcelor Corporation)
- DTT stands for Doctrine & Tactics Training
- DTT stands for Doctrine Training Team
- DTT stands for Developmental Technician Team
- DTT stands for Dorsal Trigeminothalamic Tract (brain)
DTT