DTI
DTI is an abbreviation for:
- Department of Trade and Industry (United Kingdom) , former British authority
- Detroit, Toledo and Ironton Railroad , US railroad company
- German Theater Institute , drama school in Weimar
- Deutsches Tiefkühlinstitut , a trade association
- Diffusion tensor imaging , a variant of magnetic resonance imaging, see Diffusion Tensor Imaging
- Direct Turbo Injection in Renault engines, see Direct Injection #Distribution