| Abbreviation | Definition |
|---|---|
| CTMC | Communication Theory Mini-Conference, IEEE Global Telecommunications Conference |
| CTN | confectionery tobacco and news |
| CTNX | Creative Talent Network Expo |
| CTOU | Conference Training and Outreach Unit |
| CTPC | California Transportation Planning Conference |
| CTRA | Comox Town Residents Association |
| CTRD | Common Themes in Reproductive Diversity |
| CTRE | Conference on Teacher Research Experiences |
| CTRF | Canadian Transportation Research Forum |
| CTRQ | International Conference on Communication Theory, Reliability, and Quality of Service |
| CTRR | Current Topics in Radiation Research |
| CTS | Computer and Technology Showcase |
| CTSI | Confederated Tribes of Siletz Indians |
| CTW | IEEE Communications Theory Workshop |
| CUBIC | Chicago Universities Bioengineering Industry Conference |
| CUC | Conference of Urban Counties |
| CUCC | CIMIC Unit Commander Conference |
| CUEME | Conference on Cultivating Undergraduate Entrepreneurship and Management Engineering |
| CURM | IEEE Working Conference on CURrent Measurement |
| CURP | Conference for Undergraduate Research in Psychology |