| Acronym | Definition |
|---|
| DTTC | Desmond Tutu Tuberculosis Centre (University of Stellenbosch; Stellenbosch, South Africa) |
| DTTC | Diploma in Travel and Tourism Consulting |
| DTTC | Design and Test Technology Conference (Intel Corporation) |
| DTTC | Digital Thermometer, Timer & Clock |
| DTTC | Department of Trade, Tourism and Competitiveness |
| DTTC | Dynamic Temporal and Tactile Cueing for Speech Motor Learning (speech pathology) |
| DTTC | Digital Television Transition Coalition (US) |
| DTTC | Deloitte Touche Tohmatsu CPA (Certified Public Accountants) Limited (Beijing, China) |