- DTCI stands for Defense Transportation Coordination Initiative
- DTCI stands for Defense Trial Counsel of Indiana (Indianapolis, IN)
- DTCI stands for Developpement Technologie Communication Informatique (French information technology service company)
- DTCI stands for Division on Transnational Corporations and Investment (UN Conference on Trade and Development)
- DTCI stands for Digital Trunk Controller ISDN (Telecommunications)
- DTCI stands for Digital Trunk Carrier Interface (Hekimian)
DTCI